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FLOWERS AND INSECTS 


LISTS OF VISITORS OF FOUR HUNDRED AND 
FIFTY-THREE FLOWERS 


By 
CHARLES ROBERTSON 


CARLINVILLE, TLLINOIS 
1928 


THE SCIENCE PRESS PRINTING COMPANY 
LANCASTER, PA. 
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Copyrighted 1929 
By CHARLES ROBERTSON 


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PREFACE 


BEGINNING September, 1887, and ending July, 1899, the papers 
mentioned in the bibliography record 7,817 visits to 278 flowers. 
The present work records 15,172 visits to 441 flowers, nearly twice 
as many, excluding visits to 12 wind flowers. Mueller’s ‘‘ Fertilisa- 
tion of flowers’’ records 5,231 visits, and his ‘‘Alpenblumen”’ 
gives 8,491. 

The observations were made within ten miles of Carlinville. 
The number of species of bees found on flowers at Carlinville is 


Bb 


296: compared with New York, 189; Connecticut, 231; New 


Jersey, 250. The list of visitors contains types of 232 new species 
of insects. 

In identifying insects assistance has been afforded in Hymenop- 
tera by W. H. Ashmead, Nathan Banks, J. C. Crawford, E. T. 
Cresson, R. A. Cushman, A. B. Gahan, W. J. Fox, L. O. Howard, 
Theo Pergande, and S. A. Rohwer; in Diptera by J. M. Aldrich, 
D. W. Coquillett, C. W. Johnson, J. R. Malloch, R. R. Parker, C. 
H. T. Townsend, and S. W. Williston; in Lepidoptera by G. H. 
French and C. A. Hart; in Coleoptera by C. A. Frost, C. A. Hart, 
Charles Liebeck, and Samuel Henshaw; in Hemiptera by C. A. 
Hart, H. M. Parshley, and P. R. Uhler; in Neuroptera by Nathan 
Banks and J. C. Crawford. 

In 1887 names were rather readily obtained for Syrphidae, 
Bombyliidae, and Conopidae. In 1888 for 384 specimens of 


Diptera, estimated as 89 species, but certainly containing many — 


more, only 17 specific determinations were received. It was hard 
to get names for Tachinidae until 1891-2 when Townsend supplied 
them. By Coquillett the Empididae were identified in 1894-5, and 
many Tachinidae and other Diptera in 1896-1901. For Sar- 
cophagidae only a few names, some erroneous, were obtained until 
1920 when they were determined by Parker. 

In 1892-1901 many non-aculeate Hymenoptera were identified 
by Ashmead. Many manuscript names were supplied by him. 
Some of these have never been described, while others have been 
described under other names. 

Particular difficulty was experienced in the case of the bees, 
by far the most important for the investigation. Of the bees 
recognized only about 39.8 per cent are mentioned in Cresson’s 
catalogue of 1887, and of those only about 46.6 per cent were 
identified for both sexes. At present I know both sexes in 81.7 
per cent of the local bees. 

3 


705533 


4 FLOWERS AND INSECTS—XXVI 


Generally, determinations of bees are unreliable except when 
both sexes of all of the species are known. When only one sex is 
known the other is probably mixed with that of another species. 
Formerly in Agapostemon four species had been distinguished in 
the females but the males were referred to another species, 
A. tricolor. There was little chance of separating another real 
species and this condition had the advantage of indicating five 
species instead of four. Sometimes the species are separated only 
in the males and the females ignored. Determinations of the 
females are twice as important as those of the males since they 
make twice as many flower visits. 

On account of the impossibility of getting all of the bees identi- 
fied it was necessary to describe the new species and match the 
sexes, thus making a digression which interrupted the study and 
involved an intrusion into a field which there was no inclination 
to cultivate. 

Of all bees the bumblebees are the easiest to collect and identify. 
Eight species occur at Carlinville. Two species, Bombus ameri- 
canorum and Bombias auricomus, had the females mixed under the 
name of Bombus pennsylvanicus and were referred to the male of 
Bombias auricomus, while the male of Bombus americanorum was 
referred to another genus as Apathus? elatus. The female of 
another species was identified for me as Bombus ridingsvi. The 
worker was mentioned in 18, 579, 1891, and the male in 4, 65, 1891. 
But Bombus ridingsii turned out to be a sex name of Bombus bi- 
maculatus, the prior name of the male of the same species. 

From my experience I think that a specialist is competent to 
make determinations, or compare types, only at the time when he is 
making a careful study of a particular group. In 32 cases I re- 
ceived two different specific names for the same insect. 

Your species monger describes the obvious and easy cases, the 
males and females as distinct species, and passes on the difficulties 
to some one else. North America is a large region and entomology, 
or even an order of insects, is a large subject. A specialist’s relia- 
bility bears an inverse relation to the size of the region and the 
extent of the subject in which he affects authority. Students of 
bees describe species from all over North America, and even farther, 
but any one of them, and all of them together, can not identify 
both sexes of the bees of any locality. 

All of the observations given here were made for the purpose of 
ascertaining the different kinds of insect visitors. Collectors’ notes 
are worthless as data of anthecology because the collector is looking 
out for particular kinds of insects and not for all of the kinds which 


CHARLES ROBERTSON 5 


occur on the flowers. They are worthless as data of insect habits 
because the collector is certain to select the flowers which are most 
favorable for observation and which are most attractive to the kinds 
of insects he is after. Collectors’ notes almost invariably fail to 
indicate what the insects are doing on the flowers and whether they 
affect pollination or not. 

The following persons made additions to the local lists of the 
plants mentioned—Prof. I. H. Benham: Blephilia hirsuta, Eupa- 
torium perfoliatum, Teucrium canadense; George T. Palmer: . 
Erigeron ramosus, Stachys palustris; Robertson Palmer: Lllisia 
nyctelaea, Hypoxis hirsuta, Polemonium reptans, Sambucus cana- 
densis, Scutellaria parvula; H. B. Parks: Achillea millefolium, 
Apocynum cannabinum, Blephilia ciliata, Cassia chamaecrista, 
Ceanothus americanus, Cicuta maculata, Cucurbita pepo, Eryngium 
yuccifolium, Eulophus americanus, Lepachys pinnata, Monarda 
fistulosa, Pastinaca sativa, Polygala sanguinea, Prunus americana, 
P. serotina, Pycnanthemum fleruosum, P. pilosum, Rhus copallina, 
R. glabra, Rosa humilis, R. setigera, Salix nigra, Sambucus cana- 
densis, Stenanthium angustifolium, Veronica virginica. 

In some cases the lists were based on the older nomenclature, so 
that I did not care to rewrite and rearrange them. In the pre- 
liminary list some of the later specific names are given in paren- 
thesis. After changing Danais archippus to Anosia plerippus it is 
a little tiresome to change it back to former name, and then to 
Danaus. Anyhow, biological nomenclature is synonymiecal, not bi- 
nomial. The older names usually have more important relation to 
anthecological literature. Authors will have to use them whether 
they like them or not. Often the synonymy is a subject of con- 
troversy. Of 455 plants mentioned here, about 70 have their names 
changed in Gray’s Manual. 


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Flowers and Insects 


Signs, ABBREVIATIONS, Evc. 


ab = abundant; e=collecting pollen; ef = collecting and feeding 
on pollen; esp = collecting stray pollen; cult = cultivated; expl = ex- 
ploratory visit; f=feeding on pollen; fq=frequent; fsp = feeding 
on stray pollen; gn= gnawing; in cop=in copula; int = introduced, 
not indigenous; lp = labial palps; Ma=non-social long-tongued bee 
flower; Mas = social long-tongued bee flower; Mi=non-social short- 
tongued bee flower; Mis=social short-tongued bee flower; mp = 
maxillary palps; n=non-pollinating; O=ornithophilous; ol =oli- 
golege; Pol=polytropic; pred =predaceous; R=red and all dark 
colors; S=sphingophilous; se =sucking nectar and collecting pol- 
len; sf=sucking nectar and feeding on pollen; W =white; Y = yel- 
low, greenish to orange; ¢'= male; 2 = female; $= worker. 

When no other indications are used after a name, the insect is 
counted as sucking nectar legitimately and effecting pollination. 
Dates connected by a dash after ‘‘visitors observed’’ do not indicate 
the number of days, but only the period within which the observa- 
tions were made. Signs in parentheses after a group name mean 
that the signs belong to each one of the insects mentioned in the 
group. For example, ‘‘Halict. (?, ¢)’’ means that all of the fol- 
lowing Halictidae are females and all collecting pollen. 

After family names the ending ‘‘idae’’ is not repeated, as 
Halict. for Halictidae. When only one species of a genus was ob- 
served, the specific name is not repeated in the lists. Thus Apis = 
Apis mellifera 9. This avoids repeating mellifera 216 times. 
Four hundred and forty-four genera have only one species each, 
which it is not necessary to repeat. 

The plant mames used are those of the 7th edition of Gray’s 
Manual of Botany, 1908. 

Numbers in parentheses, for example (12: 459), refer to the 
titles and pages in the bibliography, or to species and individuals. 


GENERAL SYNONYMICAL List 
The following is a list of all the insects taken on flowers. It 
contains authors’ names which are given here once for all and are 
not repeated in the special lists. 
Names which occur often enough to justify it are abbreviated 
as follows:—Al.= Aldrich, Ash.= Ashmead, B. B.=Brauer and 
Bergenstamm, B. L.=Boisduval and Leconte, Br. =Brulle, Bs. = 


- 
‘ 


8 FLOWERS AND INSECTS—XXVI 


Boisduval, Bv. = Beauvois, Ce. = Cockerell, Cm. = Cramer, Cq. = Co- 
quillett, Cr.= Cresson, Dh. = Dahlbom, Dg. = De Geer, Dr. = Drury, 
Ds. = Desvoidy, Ed.= Edwards, F.= Fabricius, Fl.=Fallen, Fr. = 
Forster, Gn.=Guenee, Gr.=Germar, Grv.=Gravenhorst, Hb. = 
Hiibner, Hr.=Herbst, H. S.=Herrich Schaeffer, L= Linnaeus, 
Le. = Le Conte, Lp. = Lepeletier, Lw. = Loew, Mc. = Macquart, Mg. = 
Meigen, Ml. = Melsheimer, Nr.= Norton, Nw.= Newman, Ol. = Oli- 
vier, O. S.=Osten Sacken, Pe.= Packard, Pr.=Provancher, Pt. = 
Patten, Rb.= Robertson, Rl.=Riley, Se.=Seudder, Sm. =Smith, 
Ss. = Saussure, Tn.= Townsend, Wd.= Wiedemann, Wk. = Walker, 
WI. = Williston. 
Birps 
Trochilidae: Trochilus colubris L. 


LONG-TONGUED Bers. (146) 


Anthophoridae: Amegilla walshii Cr., Anthemoessa abrupta 
Say, Anthophora ursina Cr., Clisodon terminalis Cr., Emphoropsis 
floridana Sm.; Apidae: Apis mellifera L.; Bombidae: Bombias 
auricomus Rb., type, scutellaris Cr., separatus Cr., Bombus ameri- 
canorum F., consimilis Cr. (vagans Sm.), pennsylvanicus Dg., 
ridingsii Cr., (bimaculatus Cr.), impatiens Harris, Psithyrus 
laboriosus F., variabilis Cr.; Ceratinidae (females mixed) ; Ceratina 
dupla Say, Zadontomerus ealearatus Rb., type; Emphoridae: 
Emphor bombiformis Cr., Melitoma taurea Say; Hpeolidae: Ar- 
gyroselenis minimus Rb., type, Epeolus autumnalis Rb., type, bi- 
fasciatus Cr., coreopsis Rb. MS, interruptus Rb., type, lectoides 
Rb., type, pusillus Cr., Triepeolus coneavus Cr., concolor Rb., type, 
eressonii Rb., type, donatus Sm., helianthi Rb., type, lunatus Say, 
micropygius Rb., type, nevadensis Cr., pectoralis Rb., type, remi- 
gatus F., simplex Rb., type; Euceridae: Anthedon compta Cr., 
Cemolobus ipomoeae Rb., type, Epimelissodes atripes Cr., illinoensis 
Rb., type, obliqua Say, Florilegus condignus Cr., Melissodes agilis 
Cr., asteris Rb., type, autumnalis Rb., type, bimaculata Lp., 
boltoniae Rb., type, enici Rb., type, coloradensis Cr., comptoides 
Rb., type, coreopsis Rb., type, nivea Rb., type, pallida Rb., type, 
petalostemonis Rb., type, simillima Rb., type, trinodis Rb., type, 
variabilis Rb., type, vernoniana Rb., type, vernoniae Rb., type, 
Peponapis pruinosa Say, Tetralonia belfragei Cr., dilecta Cr. 
(speciosa?), dubitata Cr., ilinoensis Rb., type, robertsoni Ce., type, 
rosae Rb., type, Xenoglossa strenua Cr., Xenoglossodes albata Cr. ; 
Megachilidae: Osmiinae, Osmiini: Alcidamea simplex Cr., truncata 
Cr., Ashmeadiella bucconis Say, Centrosmia bucephala Cr., Cera- 
tosmia lignaria Say, Diceratosmia conjuncta Cr., Gnathosmia 


CHARLES ROBERTSON 9 


georgica Cr., Hoplitis cylindricus Cr., Leucosmia albiventris Cr., 
Monilosmia canadensis Cr., Osmia atriventris Cr., collinsiae Rb., 
type, cordata Rb., type, distincta Cr., illinoensis Rb., type, pumila 
Cr.; Trypetini; Neotrypetes barbatus Rb., type, productus Rb., type 
(2 mixed with that of the next), truncatus Rb. MS, Prochelostoma 
philadelphi Rb., type; Megachilinae, Megachilini: Anthemois cen- 
tuncularis L., Chelostemoides rufimanus Rb., type, Cyphopyga mon- 
tivaga Cr., Megachile addenda Cr., brevis Say, generosa Cr., mendica 
Cr., petulans Cr., 6-dentata Rb., type, strophostylis Rb., type, Oligo- 
tropus campanulae Rb., type, Sarogaster georgica Cr., Sayapis 
pollicaris Say, pugnata Say, sayi Cr., Xanthosarus latimanus Say ; 
Coelioxyini: Coelioxys alternata Say, germana Cr., modesta Sm., 
8-dentata Say, rufitarsis Sm., sayi Rb., type; Melectidae: Melecta 
interrupta Cr., Bombomelecta thoracica Cr.; Nomadidae: Centrias 
americanus Kirby, erigerontis Rb., type, Cephen texanus Cr., 
Gnathias cuneatus Rb., type, ovatus Rb., type, xanthoparius Rb. 
MS, Heminomada obliterata Cr., Holonomada affabilis Cr., placida 
Cr., superba Cr., vincta Say, Nomada cressonii Rb., type, denticulata 
Rb., type, illinoensis Rb., type, parva Rb., type, salicis Rb., type, 
sayi Rb., type, simplex Rb., type, vicina Cr., Phor integer Rb., type, 
Xanthidium dentariae Rb., type, luteoloides Rb., type, luteolum OL. ; 
Pasitidae: Holcopasites heliopsis Rb., type, illinoensis Rb., type; 
Stelididae: Anthidiinae, Anthidiini: Anthidium cognatum Cr., 
psoraleae Rb., type, Dianthidium boreale Rb. type; Stelidini: 
Chelynia foederalis Sm., Microstelis lateralis Cr., Stelidium try- 
petinum Rb., type; Xylocopidae: Xylocopa virginica Dr. 


SHORT-TONGUED Brees. (151) 


Andrenidae: Andrena arabis Rb., type, earlini Ce., type, corni 
Rb., type, dunningii Ce., erythrogastra Ash., erythronii Rb., type, 
geranii Rb., type, illinoensis Rb., type, macoupinensis Rb., type, 
mandibularis Rb., type, nasonii Rb., type, nigrae Rb., type, nothos- 
cordi Rb., type, nubecula Sm., paniculatae Rb., MS, platyparia Rb. 
(integra Sm.), pruni Rb., type, salicacea Rb., type, salicis Rb., type, 
salictaria Rb., type, sayi Rb., type, tridens Rb., type, Iomelissa 
violae Rb., type, Opandrena cressonii Rb., type, dubia Rb., type, 
miserabilis Cr., personata Rb., type, serotina Rb., type, ziziae Rb., 
type, Parandrena andrenoides Cr., Pterandrena aliciae Rb., type, 
asteris Rb., type, helianthi Rb., type, krigiana Rb., type, lauracea 
Rb., type, pulchella Rb., type, rudbeckiae Rb., type, solidaginis Rb., 
type, Ptilandrena erigeniae Rb., type, g. maculati Rb., type, pole- 
monii Rb., type, Trachandrena eclaytoniae Rb., type, crataegi Rb., 
type, forbesii Rb., type, heraclei Rb., type, hippotes Rb., type, 


10 FLOWERS AND INSECTS—XXVI 


mariae Rb., type, nuda Rb., type, obscura Rb., type, quintilis Rb., 
type, rugosa Rb., type, spiraeana Rb., type; Colletidae: Colletes 
aestivalis Pt., albescens Cr., americanus Cr., armatus Pt., brevicor- 
nis Rb., type, compactus Cr., eulophi Rb., type, inaequalis Say, lati- 
tarsis Rb., type, nudus Rb., type, productus Rb., type, robertsonii 
Dalla Torre, type, similis Rb., type, speciosus Rb., type, willistonii 
Rb., type; Dufoureidae: Halictoides marginatus Cr.; Halictidae: 
Agapostemon radiatus Say, splendens Lp., texanus Cr., viridulus 
F. (virescens F.), Augochlora fervida Sm., viridula Sm., Chlora- 
lictus albipennis Rb., type, caeruleus Rb., type, coreopsis Rb., type, 
eressonii Rb., type, foveolatus Rb., type, illinoensis Rb., type, 
nymphaearum Rb., type, obscurus Rb., type, pilosus Sm., pruinosus 
Rb., type, smilacinae Rb., type, sparsus Rb., type, tegularis Rb., 
type, testaceous Rb., type, versatus Rb., type, zephyrus Sm., Curti- 
sapis coriacea Sm., forbesii Rb., type, fuscipennis Sm., Dialictus 
anomalus Rb., type, Evylaeus arcuatus Rb., type, foxii Rb., type, 
nelumbonis Rb., type, pectinatus Rb., type, pectoralis Sm., 4-macu- 
latus Rb., type, truncatus Rb., type, Halictus lerouxii Lp., paral- 
lelus Say, Odontalictus ligatus Say, Oxystoglossa confusa Rb., type, 
pura Say, similis Rb., type, Paralictus cephalicus Rb., type, platy- 
parius Rb., type, simplex Rb., type, Seladonia fasciata Nylander ; 
Sphecodini: Dialonia antennariae Rb., type, Drepanium falciferum 
Pt., Machaeris illinoensis Rb., type, stygia Rb., type, Proteraner 
ranunculi Rb., type, Sphecodes arvensis Pt., clematidis Rb., type, 
heraclei Rb., type, minor Rb., type, Sphecodium cressonii Rb., type, 
pimpinellae Rb., type, pyenanthemi Rb., type, smilacinae Rb., type; 
Macropididae: Macropis steironematis Rb., type; Nomiidae: Para- 
nomia nortonii Cr.; Panurgidae: Anthemurgus passiflorae Rb., 
type, Calliopsis andreniformis Sm., coloradensis Cr., Heterosarus 
parvus Rb., type, Perdita 8-maculata Say, Perditella boltoniae Rb., 
type, Pseudopanurgus albitarsis Cr., asteris Rb., type, composi- 
tarum Rb., type, labrosiformis Rb., type, labrosus Rb., type, rud- 
beckiae Rb., type, rugosus Rb., type, solidaginis Rb., type, Ver- 
benapis verbenae Ce., Zaperdita maura Ce.; Prosopididae: Prosopis 
erataegi Rb. MS, eulophi Rb., type, illinoensis Rb., type, nelumbonis 
Rb., type, pygmaea Cr., saniculae Rb., type, sayi Rb., type, thaspii 
Rb., type, ziziae Rb., type. 


OTHER HYMENOPTERA. (367) 

Bembicidae: Bembix nubillipennis Cr., spinolae Lp., Bicyrtes 
4-fasciata Say, ventralis Say, Megastizus brevipennis Walsh, Micro- 
bembex monodonta Say, Sphecius speciosus Dr., Stictia carolina F., 
Stictiella pictifrons Sm., Stizus unicinctus Say; Bethylidae: 


CHARLES ROBERTSON 11 


Goniozus cellularis Say; Braconidae (including Alysiidae and Vipi- 
onidae): Aenignostomus longipalpus Cr., Agathis areolata Ash., 
type, vulgaris Cr., Apanteles crassicornis Pr., illinoensis Ash. MS, 
terminalis Gahan, Bassus sanctus Say, Bracon ashmeadi Morrison, 
type, longicauda Pr., simplex Cr., trifolii Ash. (pygmaeus Pr.), 
vernoniae Ash. (mellitor Say), Cardiochiles tibiator Say, Chelonus 
sericeus Say, Dacnusa flavicincta Ash., Earinus limitaris Say, 
Euphorus mellipes Cr., Habrobracon gelechiae Ash., Iphiaulax 
rugator Say, Macrodyetium apicatus Pr., Microbracon tortricicola 
Ash. (variabilis Pr.), Microdus simillimus Cr., Microgaster gele- 
chiae R1., Microplitis ceratomiae Rl., croceipes Cr., gortynae RL, 
Monogonogastra fuscipennis Ash. MS, Opius fuscipennis Gahan, 
ruficeps Pr. (provancheri Dalla Torre), Orgilus rileyi Ash. (divisus 
Cr.), Toxoneuron abdominale Cr., viator Say, Urosigalphus femor- 
atus Ash., Vipio robertsonii Ash. MS; Chalcididae (including 
Elasmidae, Encyrtidae, Eulophidae, Eurytomidae, Leucospidae, 
Perilampidae, Pteromalidae): Bruchophagus funebris Howard, 
Chaleis flavipes F. (ovata Say), Chrysocharis oscinidis Ash., Elas- 
mus nigripes Howard, Eurytoma diastrophi Walsh, studiosa Say, 
Eutelus flavipes Wk., Eutrichosoma mirabilis Ash., Haltichella 
ornata Wk., xanticles Wk., Leucospis affinis Say, Pachyneuron 
mesograptae Ash., Perilampus cyaneus Br., fulvicornis Ash., hya- 
linus Say, platygaster Say, robertsoni Crawford, type, triangularis 
Say, Smicra debilis Say, torvina Cr., Syntomopus americanus 
Ash. ; Crysididae: Chrysis intricata Br., texana Gribodo, Gonochry- 
sis perpulchra Cr., Hedychridium dimidiatum Say, Hydychrum 
parvum Aaron, violaceum Br., wiltii Cr., Holochrysis hilaris Dh., 
verticalis Pt., Holopyga ventralis Say, Monochrysis parvula F., 
Notozus hyalinus Aaron, Tetrachrysis caerulans F., montana Aaron, 
nitidula F., nortonii Aaron, venusta Cr.; Crabronidae: Anacrabro 
ocellatus Pe., Blepharipus harringtonii Fox, Clytochrysus obscurus 
Sm., Ectemnius atriceps Cr., Entomognathus texanus Cr., Hypo- 
crabro 10-maculatus Say, Lindenius errans Fox, robertsoni Rohwer, 
type, Lophoerabro singularis Sm., Protothyreopus bigeminus Pt., 
rufifemur Pe., Pseudocrabro chrysargirus Lp., Rhopalum pedicel- 
latum Pe., scutellatum Say, Solenius interruptus Lp., Synothyre- 
opus tumidus Pe., Xestocrabro 6-maculatus Say, texanus Cr., 
trifasciatus Say; Eumenidae: Ancistrocerus campestris Ss., capra 
Ss., catskillensis Ss., tigris Ss., unifasciatus Ss., Eumenes belfragei 
Cr., fraternus Say, Leionotus anormis Say, arvensis Ss., elypeatus 
Rb., type, dorsalis F., foraminatus Ss., fulvipes Ss., fundatus Cr., 
histrionalis Rb., type, illinoensis Rb., type, leuacomelas Ss., megaera 
Lp., molestus Ss., perennis Ss., 4-sectus Say, serophulariae Rb. MS, 


12 FLOWERS AND INSECTS—XXVI 


vagus Ss., ziziae Rb. MS, Monobia 4-dens L., Pterochilus 5-fasciatus 
Say, Symmorphus debilis Ss., walshianus Ss., Zendalia (MS) alecol- 
huus Ss., zendaloides Rb., type, Zethus spinipes Say; Evanudae: 
Foenus incertus Cr., tarsatorius Say, Hyptia reticulata Say; Figi- 
tidae: Aspicera albihirta Ash., Cothonaspis stigmata Say, Eucoila 
mellipes Say, Eucoilidia canadensis Ash., Figites impatiens Say, 
5-lineata Say, Psilodora erythropus Ash., impatiens Say, Tri- 
rhoptrasema ashmeadi Rohwer and Fagan, Xyalosema armata Say; 
Formicidae: Camponotus castaneus Latr., herculanus L., Formica 
fusea L., rufibarbis F., schaufussi Mayr, Lasius niger L., Tapinoma 
sessile Say ; Myrmicidae: Cremastogaster lineolata Say ; Ichneumon- 
idae: Agrothereutes limatus Cr., mundus Pr., Angitia obscura Cr., 
Bathycetes scutellaris Cr., Ceratosoma fasciata Cr. (ornata Say), 
Colpognathus helvus Cr., Cremastus epagoges Cushman, retiniae 
Cr., Cryptus exulans Cr., persimilis Cr., rufoannulatus Pr., 
Diplazon sycophanta Walsh, Eiphosoma texana Cr., Exetastes 
obseurus Cr., suaveolens Walsh, Exyston abdominalis Cr., Gambrus 
albonotatus Pr., apicatus Pr., Glypta rufiscutellaris Walsh, simpli- 
cipes Cr., Hemiteles gracilariae Ash., Ichneumon flavizonatus Cr., 
funestus Cr. (laetus Br.), jucundus Br., longulus Cr., suecinetus 
Br., Idiolespa analis Grv. (limatus Cr.), Lampronota americana 
Cr., coxalis Ash. MS, varia Cr., Limneria eurycreontis Ash., fura 
Cr., Lissonota tricincta Ash. MS, Metopius polycinctorius Say, 
terminalis Ash. (seminiger Cr.), Ophion bifoveolatum Br., Phar- 
salia virginiensis Cr., Phygadeuon vulgaris Cr., Pimpla annulipes 
Br., marginata Pr., notanda Cr., novita Cr., Polyblastus citripes 
Ash. MS, Polysphincta slossonae Davis, Porizon albipennis Cr., 
conotracheli RI., Proclitus mellipes Pr., Trogus vulpinus Grv., 
Tryphon affinis Cr.; Larridae: Astatus bicolor Say, unicolor Say, 
Larra analis F., Larropsis distincta Sm., Lyroda subita Say, 
Notogonidea argentata Bv., Tachysphex acutus Pt., belfragei Cr., 
mundus Fox, tarsatus Say, terminatus Sm., Tachytes aurulentus F., 
distinctus Sm., elongatus Cr., harpax Pt., maestus Mikel, mandi- 
bularis Pt., mergus Fox, obscurus Cr., pepticus Say, sericatus Cr.; 
Mutillidae (%): Mutilla hexagona Say, sayi Blake, scrupea Say, 
Pseudomethoca canadensis Blake, Sphaerophthalma macra Cr.; 
Myrmosidae: Myrmosa parvula Fox, type, unicolor Say; Nysson- 
idae: Alyson trianguliferus Pe., Hoplisoides nebulosus Pe., Hop- 
lisus atricornis Pe., simillimus Sm., Nysson plagiatus Cr., rufiven- 
tris Cr., Zanysson aurinotus Say, plesia Rohwer, Pseudoplisus 
divisus Sm., phaleratus Say, Silaon inerme Cr.; Oxybelidae: 
Notoglossa americana Rb., type, cressonii Rb., type, emarginata 
Say, frontalis Rb., type, inornata Rb., type, Oxybelus laetus Say, 


CHARLES ROBERTSON 13 


niger Rb., type, packardii Rb., type, 4-notatus Say; Pemphredon- 
idae: Cemonus inornatus Say, Mimesa cressonii Pe., Psen tibialis 
Cr.; Philanthidae (including Cerceridae) : Cerceris astarte Banks, 
bicornuta Guerin, clypeata Dh., compacta Cr., compar Cr., echo 
Mickel, finitima Cr., fulvipes Cr. (fulvipediculata Schlet.), fumi- 
pennis Say, insolita Cr., kennicottii Cr., prominens Banks, raui 
Rohwer (frontata Say?), robertsonii Fox, cotype, rufinoda Cr., 
Eucerceris zonatus Say, Philanthus politus Say, punctatus Say, 
ventilabris F.; Pompilidae: Ageniella accepta Cr., longula Cr., 
petiolata Cr., Anoplius illinoensis Rb., type, virginiensis Cr., 
Arachnoproctonus ferrugineus Say, Batizonus algidus Sm., Cero- 
pales bipunctata Say, elegans Cr., fraterna Sm., fulvipes Cr., 
robinsonii Cr., Cryptocheilus agenioides Fox, conicus Say, fulgifrons 
Cr., Episyron biguttatus F., Lophopompilus atrox Dh., philadel- 
phicus Lp., Planiceps feralis Cr., niger Cr., Poecilopompilus inter- 
ruptus Say, navus Cr., Pompiloides americanus By., divisus Cr., 
marginatus Say, subviolaceus Cr., Priocnemis arcuatus Banks, 
Priocnemoides fulvicornis Cr., terminatus Say, unifasciatus Say, 
Psammochares pretiosa Banks, relativus Fox, colype, scelestus Cr., 
tenebrosus Cr., Pseudagenia mellipes Say, Sophropompilus in- 
genuus Cr.; Sapygidae: Sapyga centrata Say; Scelionidae: Prosa- 
cantha illinoensis Ash. MS, Teleas lineaticeps Ash.; Scoliidae: 
Campsomeris confluenta Say, Elis interrupta Say, obscura F., 
thoracica Fox, type, 5-cineta F., Scolia bicincta F., nobilitata F.; 
Sphecidae: Ammobia ichneumonea L., nuda Fernald, pennsyl- 
vanica L., Chalybion caeruleum L., Chlorion caeruleum Dr., Iso- 
dontia apicalis Sm., macrocephala Fox, Palmodes dimidiata Dg., 
Priononyx atrata Lp., thomae F., Sceliphron cementarius Dr., 
Sphex gracilis Lp., nigricans Dh., pictipennis Walsh, procera Klug, 
vulgaris Cr.; Tenthredinidae (including Xyelidae): Dolerus 
aprilis Nr., arvensis Say (unicolor Bv.), bicolor Bv., sericeus Say, 
Hylotoma humeralis Bv., macleayi Leach, Macrophya epinota Say, 
pleuricincta Nr. (nebraskensis Rohwer), Macroxyela ferruginea 
Say, Monophadnus medius Nr., Nematus luteotergum Nr., verte- 
bratus Say, Opisthoneura albidovariata Nr., Pseudosiobla excavata 
Nr.; Thynnidae: Methoca stygia Say; Tiphiidae: Tiphia clypeata 
Rb., type, illinoensis Rb., type, inornata Say, punctata Rb., type, 
robertsoni Malloch, type, transversa Say, vulgaris Rb., type; 
Tryporylidae: Trypoxylon clavatum Say, frigidum Sm., triden- 
tatum Pe.; Vespidae: Polistes annularis L., pallipes Lp., rubi- 
ginosus Lp., variatus Cr., Vespula cuneata F., germanica F., 
maculata L., vidua Ss. 


14 FLOWERS AND INSECTS—XXVI 


DipreraA. (446) 

Agromyzidae: Agromyza aeneoventris Fl., latipes Mg., Aulaci- 
gaster rufitarsis Mc., Eusiphona mira Cq., Leucopis nigricornis 
Egger (americana Malloch), Lobioptera indecora Lw., Milichiella 
lucidula Beck, Phytomyza palpalis Cq. MS.; Anthomyidae: An- 
thomyia pluvialis L., radicum L., Anthomyiella pratincola Panzer, 
Calythea albicinecta Fl., Coenosia antennalis Stein, antica Wk. 
(leucoprocta Wd.), fuscopunctata Me. (ovata Stein), lacteipennis 
Mg., sexnotata Mg., Hammomyia paludis Johansen, Homalomyia 
canicularis L., prostrata Rossi (incisurata Zett.), Hydrophoria 
ambigua F1., Hydrotaea houghi Malloch, Hyetodosia rufitibia Stein, 
Hylemyia dilatata Malloch, inornata Stein, juvenalis Stein, laevis 
Stein, plumosa Cq., type, Limnophora narona Wk., Lispa albitarsis 
Stein, consanguinea Lw., uliginosa Fl., Mydaea diruta Stein, fusca 
Stein, socialis Stein, Ophyra leucostoma Wd., Phorbia acra WE., 
cinerella F., platura Mg., Proboscimyia siphonina Bigot; 
Bibionidae: Bibio albipennis Say, femoratus Wd., pallipes Say, 
Dilophus obesulus Lw., serotinus Lw., Scatopse notata L., pulicaria 
Lw., Bombyliidae: Aldrichia ehrmanii Cq., Anthrax alternata Say, 
fulvohirta Wd., haleyon Say, hypomelas Mce., palliata Lw., parvi- 
cornis Lw., sinuosa Wd., Argyramoeba albofasciata Mc., oedipus 
F., Bombylius atriceps Lw., azaleae Shannon, major L., pulchellus 
Lw., Exoprosopa decora Lw., emarginata Me., fasciata Mce., fasci- 
pennis Say, Geron calvus Lw., rufipes Mc., Lepidophora lepidocera 
Wd., Oncodocera leucoprocta Wd., Phthiria aldrichi Johnson, 
eincta Cq. MS, sulphurea Lw., Sparnopolius fulvus Wd., Systoechus 
vulgaris Lw., Systropus macer Lw., Thlipsogaster ater Cq., Toxo- 
phora amphitea Wk., Borboridae: Borborus equinus Fl.; Chiron- 
omidae: Ceratopogon fusculus Cq., websteri Cq., Conopidae: 
Conops brachyrrhynchus Me., sylvosus WI1., xanthopareus WL, 
Dalmannia nigriceps Lw., Myopa pilosa WI. vesiculosa Say, 
Oncomyia loraria Lw., Physocephala texana WI., tibialis Say, 
Robertsonomyia palpalis Rb., type, Stylogaster biannulata Say, 
neglecta W1., Zodion fulvifrons Say, nanellum Lw., obliquefasciatum 
Me.; Culicidae: Aedes vexans Mg., Culex impiger Wk. (nigripes 
Zett.), stimulans Wk. (cantans Mg.) ; Dexiidae: Myocera cremides 
Wk., Ptilodexia abdominalis Ds., Scotiptera parvicornis Tn. MS; 
Drosophilidae: Drosophila varia Wk.; Empididae: Brachystoma 
robertsonii Cq., type, Empis avida Cq., type, compta Cq., distans 
Lw., humilis Cq., type, levicula Cq., type, loripedis Cq., type, nuda 
Lw., otiosa Cq., type, Pachymeria pudica Lw., Parempis (MS) 
clausa Cq., Rhamphomyia angustipennis Lw., exigua Lw., fumosa 


CHARLES ROBERTSON 15 


Lw., gilvipilosa Cq., type, irregularis Lw., limbata Lw., mutabilis 
Lw., piligeronis Cq., type, priapulus Lw., rava Lw., ravida Cq., 
type, sordida Lw., tersa Cq., Tachydromia pusilla Lw., Ephydridae ; 
Notiphila unicolor Lw., Ochthera lauta Wheeler, pred.; Hetero- 
neuridae: Clusia lateralis Wk.; Leptidae: Hilarimorpha mikii W1., 
type; Lonchaeidae: Lonchaea parvicornis Mg., aberrans Malloch, 
cotype; Midaidae: Midas clavatus Dr., tibialis Wd.; Muscidae: 
Compsomyia macellaria F., Graphomyia americana Ds. (maculata 
Seopoli), Lucilia caesar L., sericata Mg., sylvarum Mg., Morellia 
micans Mc., Musea domestica L., Muscina assimilis Fl., Myospila 
meditabunda F., Phormia regina Mg., terraenovae Ds., Pollenia 
rudis F., Protocalliphora splendida Me., Pseudopyrellia cornicina 
F., Stomoxys ealcitrans L.; Mycetophilidae: Dynatosoma thoracica 
Cq., type, Eugnoriste occidentalis Cq., Sciara atrata Say, inconstans 
Fitch, vulgaris Fitch; Nemestrinidae: Rhynchocephalus sackeni 
WL; Ortalidae: Camptoneura picta Me., Chaetopsis aenea Wd., 
Euxesta notata Wd., Rivellia pallida Lw., 4-fasciata Mce., viridulans 
Ds., Seoptera colon Lw.; Oscinidae: Chlorops approximatonervis 
Zett., assimilis Me., mellea Lw., proxima Say, pulverea Cq., versi- 
color Lw., Elachiptera costata Lw., flavida W1., Hippelates flavipes 
Lw., plebejus Lw., pusio Lw., Meromyza americana Fitch, Oscinis 
coxendix Fitch, soror Me., trigramma Lw., Siphonella cinerea Lw., 
inquilina Cq., oscinina Fl. ; Phoridae: Phora fungicola Cq., Trineura 
aterrima F.; Pipwnculidae: Chalarus spurius FI. ; Psilidae: Chyliza 
apicalis Lw.; Sapromyzidae: Sapromyza longipennis F., vulgaris 
Fitch; Sarcophagidae (Calliphora and Cynomyia belong to Musci- 
dae): Boettcheria cimbicis Tn., Calliphora erythrocephala Mg., 
vomitoria L., Cynomyia ecadaverina Ds., Helicobia helicis Tn., 
4-setosa Cq., Metoposarcophaga pachyprocta Parker, Sarcophaga 
aleedo Al., aldrichi Parker, assidua Wk., bullata Parker, cimbicis 
(pallinervis Thompson), dux sarracenioides Al., haemorrhoidalis 
F1., hunteri Hough, impar Al., marginata Al., sinuata Mg., utilis 
Al.; Scatophagidae: Cordylura munda Lw., Scatophaga fureata 
Say; Scenopinidae: Scenopinus nubillipes Say; Sciomyzidae: 
Sciomyza humilis Lw., Tetanocera pictipes Lw. (umbrarum L.) ; 
Sepsidae: Nemopoda minuta Wd., Piophila casei L., Prochyliza 
xanthostoma Wk., Sepsis violacea Mg., Themira putris Lw.; 
Simuliidae: Simulium pecuarum RL; Stratiomyidae: Allognosta 
fuscitarsis Say, obsecuriventris Lw., Microchrysa polita L., 
Nemotelus glaber Lw., Odontomyia cincta Ol., nigrirostris Lw., 
pubescens Day, Sargus viridis Say, Stratiomyia apicula Lw., dis- 
ealis Lw., meigenii Wd., quaternaria Lw., unilimbata Lw.; 


16 FLOWERS AND INSECTS—XXVI 


Syrphidae: Allograpta obliqua Say, Baccha aurinota Wk. (fasci- 
pennis’ Wd.), clavata F., fuscipennis Say, tarchetius Wk., 
Brachyopa vacua O. S., Brachypalpus frontosus Lw. (oarus Wk.), 
rileyi WI. (metallifera Bigot}, Ceria abbreviata Lw., Chaleomyia 
aerea Lw., Chilosia capillata Lw. (caltha Shannon), cyanescens 
Lw., pallipes Lw., petulea W1., puctulata Hunter, Chrysochlamys 
dives O. S., Chrysogaster nigripes Lw., ontario Curran, Criorhina 
decora Me., intersistens Wk., umbratilis WI., Didea fasciata 
fuscipes Lw.; Eristalis aeneus Scopoli, bastardi Me., brousi WI. 
(meigenii Wd.), dimidiatus Wd., flavipes Wk., latifrons Lw., tenax 
L., transversus Wd., vinetorum F., Helophilus divisus Lw., laetus ~ 
Tia latifrons Lw., ailie Me. Maligia cimbiciformis F'l., illinoetieta 
Rb., type, stents F Uy ieleabe toes mellinum L., obseurnel Say, 
MErapiondns villosus Bigot, Mesogramma irate Say, marginata 
Say, polita Say, Milesia ornata F. (virginiensis Dr.), Myiolepta 
nigra Lw., strigilata Lw., varipes Lw., Orthoneura nitida Wd., 
pictipennis Lw., Paragus bicolor F., tibialis Fl./ Pipiza femoralis 
Lw., festiva Mg. (albipilosa W1.), nigribarba Liw. (apisaon Wk.), 
pistica W1., pubescens Lw., pulchella WI. (Pipizella banksi Cur- 
ran), Platychirus hyperboreus Staeger, quadratus Say/ Psilota 
buceata Me., Pterallastes thoracicus Lw., Rhingia nasica Say, 
Sericomyia chrysotoxoides Me., Sphaerophoria cylindrica Say, 
Sphegina campanulata Rb., type, rufiventris Lw., Spilomyia hami- 
fera Lw., longicornis Lw., 4-fasciata Say, Syritta pipiens L., 
Syrphus americanus Wd., arcuatus FI., ribesii F., torvus O. S., 
Temnostoma trifasciata Rb., type, Teuchocnemis lituratus Lw., 
Tropidia albistylum Me., mamillata Lw., quadrata Say, Volucella 
evecta Wk., fasciata Mc., vesiculosa F., Xanthogramma emarginata 
Say, felix O. S., flavipes Lw., Xylota angustiventris Lw., bicolor 
Lw., chalybea Wd., fraudulosa Lw. (baton Wk.) ;/ Tabandae: 
Chrysops indus O. S., striatus O. S., Tabanus lineola F., Therio- 
plectes illotus O. S.; Tachinidae: Actia pilipennis Fl., Alophora 
aeneoventris WI1., fumosa Cq., grandis Cq., cotype, pulverea Cq., 
Amobia distineta Tn., type, Apinops atra Cq., type, Araba tergata 
Cq., Archytas analis F., aterrima Ds., hystrix F., Belvosia bifasciata 
F., unifasciata Ds., Biomyia georgiae B. B., Blepharipeza leuco- 
phrys Wd., Brachycoma intermedia Tn., type, sarcophagina Tn., 
type, Celatoria diabroticae Shimer, Ceratomyiella conica Tn., type, 
Chaetogaedia analis Wulp (aeroglossoides Tn., type), erebra Wulp, 
Chaetophleps setosa Cq., Chaetoplagia atripennis Cq., Cistogaster 
occidua Wk., pallasii Tn. Clytiomyia flava Tn., type, Crypto- 
meigenia theutis Wk., Cyphocera fucata Wulp, Distichona auriceps 
Cq., varia Wulp, Ennyomma clistoides Tn., type, globosa Tn., 


CHARLES ROBERTSON 17 


nigrifrons Tn., type, Hpalpus signiferus Wk., Epigrimyia floriden- 
sis Tn., geniculata Tn., type, illinoensis Rb., type, polita Tn., 
Euacemyia tibialis Cq., Eumyotheria illinoensis Tn., type, 
Euphorocera cinerea Wulp, claripennis Me. (edwardsii W1.), 
Euryceromyia robertsonii Tn., type, Euthera tentatrix Lw., Ex- 
orista confinis F'., nigripalpis Tn., pyste Wk., Frontina aletiae RL., 
archippivora Wk., frenchii W1., Gonia capitata Dg., exul WL, 
Gymnochaeta aleedo Lw., Gymnoprosopa clarifrons Tn., type, 
Gymnosoma fuliginosa Ds. Hilarella aristalis Cq., type, 
Hyalomyodes triangulifera Lw., Hyalurgus johnsoni Tn., Hypostena 
barbata Cq., dunningii Cq., indecisa Tn., type, variabilis Cq., 
Leskia analis Cq. (similis Tn.), Leskiomima prima Rb. MS, secunda 
Rb., MS, Leucostoma atra Tn., type, neomexicana Tn., nigricornis 
Tn., siphonina Rb. MS, Linnaemyia compta F'l., Macquartia pristis 
Wk. (halisodotae Tn.), Masiphya brasiliana B. B., Metopia 
leucocephala Rossi, Neofischeria flava Tn., Ocyptera argentea Tn., 
nigra Al., dosiades Wk., lata Rb. MS (vulgaris Al.), tenuis Kb. 
MS (euchenor Wk.) Opsidia gonioides Cq., Pachyophthalmus 
floridensis Tn., signatus Mg. (mixed with distortus, aurifrons Tn., 
type), Panzeria radicum F. (aldrichi Tn.), Paradidyma singularis 
Tn., type, Peleteria robusta Wd., Phasioclista metallica Tn., type, 
Phorantha asteris Rb. MS, humeralis Rb., type, magna Rb. MS, 
purpurascens Tn., type, robertsonii Tn., type, Phorichaeta sequax 
WL, Phyto clesides Wk. (anomala Tn.), Polidea areos Wk. (ameri- 
eana Tn., type), Senotainia rubriventris Me., trilineata Wulp, 
Siphona geniculata Dg., Siphoplagia anomala Tn., flaccidirostris 
Rb. MS, Spallanzania hesperidarum W1., Sturmia distincta Wd., 
fraudulenta Wulp, inquinata Wulp, nigrita Tn., type, phyciodis 
Cq., Tachina mella Wk., robusta Tn., rustica Fl., Trichopoda 
lanipes F., pennipes F., plumipes F. (trifasciata Lw.), Trichophora 
ruficauda Wulp, Viviania lachnosternae Tn., Winthemia 4-pustu- 
lata F., Xanthomelana areuata Say; Tipulidae: Geranomyia cana- 
densis Westwood; Trypetidae: Euaresta aequalis Lw., bella Lw., 
Plagiotoma obliqua Say, Trypeta culta Wd., finalis Lw., humilis 
Lw., solaris Lw. 
LepmpopTeraA. (99) 

Agaristidae: Alypia octomaculata F.; Arctiidae: Callimorpha 
fulvicosta Clemens (colona Hb.), Utetheisa bella L.; Ctenuchidae: 
Scepsis fulvicollis Hb. ; Crambidae: Crambus laqueatellus Clemens. ; 
Hesperiidae: Achalarus lycidas 8S. & A., Amblyscirtes samoset 
(hegon) Se., Ancyloxypha numitor F., Atalopedes huron Ed. 
(campestris Bs.), Atrytone delaware (logan) Ed., zabulon B. L., 


18 FLOWERS AND INSECTS—XXVI 


Epargyreus tityrus F., Euphyes metacomet Harris (vestris Bs.), 
verna Ed., Hesperia montivaga Reakirt (syrichtus F.), Hylephila 
phylaeus Dr., Limochores manataaqua Se., taumas F. (cernes B. 
L.), Pamphila dion Ed., hobomok Hr., Pholisora catullus F., hay- 
hurstii Ed., Polites peckius Kirby, Thanaos brizo B. L., icelus Lint- 
ner, juvenalis F., martialis Se., persius Se., Thorybes bathyllus 
(daunus Cm.), pylades Se.; Lycaenidae: Chrysophanus thoe B. L., 
Cyaniris pseudargiolus B. L., Eupsyche m-album B. L., Everes 
comyntas Godart, Heodes hypophlaeas Bs., Strymon titus F., 
Thecla calanus Hb., sylvinus Bs. (acadica Ed.), Uranotes melinus 
Hb.; Noctwidae: Acontia candefacta Hb., Agrotis ypsilon Rott. 
Carneades velleripennis Grote, Drasteria erechtea Cm., erichto Gn. 
(erassiuscula Haw.), Feltia subgothica Stephens (ducens Wk.), 
Heliothis armiger Hb. (obsoleta F.), dipsaceus L. (phloxiphaga 
G. & R.), Leueania albilinea Hb., Plusia precationis Gn., simplex 
Gn. (faleifera Kirby), Schinia jaguarina Gn., Spragueia leo Gn.; 
Nymphalidae: (including Danaidae, Satyridae, Libytheidae) : 
Anosia plexippus L. (Danaus archippus F.), Argynnis cybele F. 
(mixed with aphrodite F.), Basilarchia archippus Cm., astyanax 
F., Cereyonis alope F., Charidryas nyeteis D. & H., Euphydryas 
phaeton Dr., Euptoieta claudia Cm., Euvanessa antiopa L., Hypatus 
bachmanni Kirt., Junonia coenia Hb., Neonympha eurytus F., 
Phyciodes tharos Dr., Polygonia comma Harris, interrogationis 
F., Speyeria idalia Dr., Vanessa atalanta L., cardui L., huntera F. 
(virginiensis Dr.) ; Papilionidae: (including Pieridae) : Callidryas 
eubule L., Euphoeades troilus L., Eurema lisa B. L. (euterpe Men.), 
Eurymus philodice Godart (mixed with eurytheme), Heraclides 
cresphontes Cm., Iphiclides ajax L. (marcellus Cm.) Jasoniades 
glaucus L., Laertias philenor L., Nathalis iole Bs., Papilio asterias 
F. (polyxenes F.), Pieris repae L., Pontia protodice B. L., Xanthidia 
nicippe Cm., Zerene caesonia Stoll; Pyraustidae: Loxostege similalis 
Gn., Nomophila noctuella Voll.; Pyromorphidae: Harrisina ameri- 
cana Guerin; Sestidae: Carmenta pyralidiformis Wk., Sesia pictipes 
G. & R., 6-fasciata Ed. (bassiformis Wk.) ; Sphingidae: Chaero- 
campa tersa L., Deilephila lineata F., Hemaris axillaris G. & R. 
(diffinis Bs.), thysbe F., Philampelus pandorus Hb. (satellitia Dr.), 
Protoparce celeus Hb. (5-maculata Haw.), Sphinx eremitus Hb. 


CoLEOPTERA. (153) 


Anthicidae: Corphyra labiata Say, terminalis Say; Bruchidae: 
Bruchus bivulneratus Horn, cruentatus Horn, discoideus Say, 
exiguus Horn (horni Pic.), hibisci Ol., mimus Say, musculus Say, 
obsoletus Say (obtectus Say); Buprestidae: Acmaeodera culta 


CHARLES ROBERTSON 19 


Weber (tubulus F.), pulchella Hr., Agrilus difficilis Gory, egenus 
Gory; Calandryidae: Rhodobaenus 13-punctatus Ll.; Carabidae: 
Callida punctata Le., Lebia viridis Say ; Cerambycidae: Acmaeops 
nigripennis Le., directa Nw., Batyle suturalis Say, Callimoxys fusci- 
pennis Le., sanguinicollis Ol., Cyllene decorus Ol., robiniae Fr., 
Euderces picipes F., Leptura exigua Nw., pubera Say, vittata Gr., 
Molorchus bimaculatus Say, Strangalia famelica Nw., Tetraopes 
tetraophthalmus Fr., Typocerus badius Nw., lugubris Say, sinuatus 
Nw., velutinus Ol.; Chrysomelidae: Anomoea laticlavia Fr., Babia 
4-guttata Ol., Cerotoma caminea F. (trifurcata Fr.), Chrysomela 
similis Rogers, Cryptocephalus insertus Hald., Diabrotica atripennis 
Say, 12-punctata F., longicornis Say, vittata F., Disonycha limbi- 
collis (pennsylvanica) pallipes Crotch, Galeruca tuberculata Say, 
Glyptina spuria Le., Haltica carinata Gr., Lina lapponica L., 
Luperaltica fuscula Le., Mantura floridana Crotch, Orsodachna 
atra Ahrens, Pachybrachys atomarius M1., Rhabdopterus picipes O1., 
Trirhabda tomentosa L.; Cleridae: Enoplium 4-punctatum Say; 
Coccinellidae: Coccinella 9-notata Hr., sanguinea L., Hippodamea 
glacialis F., parenthesis Say, 15-maculata Mul. (convergens 
Guerin), 13-punctata L., Megilla maculata Dg. (fuscilabris Mul.), 
Seymnus consobrinus Le., terminatus Say; Curculionidae: Apion 
nigrum Hr., Centrinites strigicollis Casey, Centrinus perscillus 
Gyll., picumnus Hr., scutellum-album Say, Idiostethus subcalvus 
Le., tubulatus Say, Limnobaris prolixa Le., Listronotus caudatus 
Say; Dermestidae: Anthrenus musaeorum L. (castaneae M1.), 
serophulariae L., Attagenus piceus Ol., Cryptorhopalum haemor- 
rhoidale Le., triste Le., Orphilus glabratus F. (ater Er.) ; Elateri- 
dae: Agriotes insanus Candeze, Limonius griseus By. (propexus 
Candeze), Melanotus communis Gyll., Sericosomus silaceus Say; 
Erotylidae: Languria mozardi Latr.; Histeridae: Hister americanus 
Paykull, subrotundus Say ; Lampyridae: Calopteron reticulatum F., 
Chauliognathus marginatus F., pennsylvanicus Dg., Ditemnus 
bidentatus Say, Ellychnia corrusca L., Photinus pyralis L., Poda- 
brus brunnicollis Le., rugulosus Le., tomentosus Say, Pyractomena 
angulata Say, Telephorus bilineatus Say, dentiger Le., flavipes Le., 
scitulus Say; Latridiidae: Corticaria distinguenda Comolli; Mela- 
chidae: Anthocomus erichsoni Le., Attalus scincetus Say, Collops 
4-maculatus F., Melyris cribrata Le. ; Melandryidae: Canifa pallipes 
Ml., Nothus varians Le.; Meloidae: Epicauta cinerea Fr., pennsyl- 
vanica Dg., trichrus Pallas, vittata Fr., Macrobasis unicolor Kirby, 
Nemognatha vittigera Le., Pyrota germari Haldeman, mylabrina 
Chevrolat, terminata Le.; Mordellidae: Mordella marginata ML., 
meldena Gr., 8-punctata F., seutellaris F., triloba Say, Mordellistena 


20 FLOWERS AND INSECTS—XXVI 


aspersa M1., biplagiata Hel., comata Le., grammica Le., limbalis ML, 
lutea ML., marginalis Say, ornata M1., pubescens F., tosta Le., Pen- 
taria trifasciata Ml.; Nitidulidae: Carpophilus brachypterus Say, 
Cercus abdominalis Erichson, Epurea labilis Erichson, truncatella 
Mannerheim ; Oedemeridae: Asclera puncticollis Say, ruficollis Say, 
Oxacis thoracica F.; Rhipiphoridae: Myodites fasciatus Say, Rhipi- 
phorus dimidiatus F., flavipennis Le., limbatus F.; Rhynchitidae: 
Eugnamptus angustatus Hr.; Scarabaeidae: Euphoria fulgida F., 
sepulchralis F., Hoplia trifasciata Say, Macrodactylus angustatus 
By., Onthophagus pennsylvanicus Harold, Trichius affinis Gory, 
piger F., Valgus canaliculatus F. 


HEMIPTERA. (25) 

Acanthudae: Triphleps insidiosus Say; Berytidae: Corizus 
lateralis Say, Harmostes reflexulus Say; Capsidae: Calocoris rapi- 
dus Say, Lopidea media Say, Lygus pratensis L., Phytocoris 
scrupeus Say, Plagiognathus obscurus Uhler; Coreidae: Alydus 
eurinus Say, pilosulus H.S., Chariesterus antennator F.; Corime- 
laenidae: Corimelaena lateralis F., pulicaria Gr.; Cydmnidae: 
Canthophorus cinctus Bv.; Lygaeidae: Lygaeus turcicus F., Melano- 
coryphus bicrucis Say, Oncopeltus fasciatus Dallas, Ortholomus 
longiceps Stal; Nabidae: Coriscus ferus L.; Pentatomidae: Euschis- 
tus fissilis Uhler (euschistoides Vol.), ictericus L., variolarius By., 
Podisus spinosus Dallas; Phymatidae: Phymata wolffii Stal, pred.; 
Reduvudae: Sinea diadema F. 


NEUROPTERA 
Chrysopidae: Chrysopa plorabunda Fitch. 


VISITORS 


ACANTHACEAE 


Dianthera americana (5: 65-6).—Blooms June 8—August 23; 
58 visitors observed, June 11—July 5; Mas, R. ‘ 

Long-tongued Bees (24)—Ayp.: Apis ab; Bomb.: Bombias sepa- 
ratus §, fq, Bombus americanorum 9, impatiens 9; Ceratin.: Cera- 
tina ¢ 9, ab; Megachil.: Osmiini (9): Alcidamea simplex se, fq, 
Hoplitis sc, Osmia distincta; Megachilini: Cyphopyga J, Megachile 
addenda 9, se, brevis ¢, generosa 4, Sayapis pugnata ¢'; Coelioxy- 
ini: Coelioxys 8-dentata ¢ 9, sayi ¢' 2, fq; Nomad.: Centrias ameri- 
eanus 9; Epeol.: Epeolus bifasciatus ¢, Triepeolus concolor ¢ 9; 
Eucer.: Florilegus 4, ab, Melissodes bimaculata ¢ 9, ab, variabilis 
6, Tetralonia dilecta 9, rosae ¢ 2; Anthophor.: Anthemoessa 
Gide 2a: 


CHARLES ROBERTSON 21 


Short-tongued Bees (11)—Halict.: Agapostemon radiatus ¢ 9, 
viridulus 2, Chloralictus pilosus 9, ¢, sparsus 9, se, versatus 2, se, ab, 
Halictus lerouxii ¢ 2, ab, Odontalictus ¢ 2, Oxystoglossa confusa 
9, se, ab, similis 9, Seladonia ¢ 9; Panurg.: Calliopsis andreniformis 
3 &, ab. 

“Other Hymenoptera (3)—Sphec.: Sphex nigricans; Bembic: 
Bembix spinolae; Scoli.: Campsomeris. 

Diptera (12)—Syrph.: Allograpta f, n, Eristalis tenax sf, Helo- 
philus laetus f, n, Mesogramma marginata f, n, Sphaerophoria f, n, 
Syritta, Tropidia quadrata; Bombyli.: Anthrax parvicornis, Bom- 
bylius azaleae, atriceps fq; Conop.: Physocephala tibialis, Zodion 
fulvifrons. 

Lepidoptera (8)—Nymphal.: Charidryas; Lycaen.: Cyaniris; 
Papilion.: Pieris; Hesperi.: Epargyreus, Euphyes metacomet, 
Pholisora catullus, Thanaos martialis, Thorybes bathyllus. 


Ruellia ciliosa—Blooms May 26-September 20; 10 visitors ob- 
served, May 29—August 2; Ma, R. 

Long-tongued Bees (6)—Bomb.: Bombus americanorum 2 9, 
impatiens 9; Megachil.: Megachile brevis 9, ¢, also cutting petals, 
Xanthosarus 9, sc; Eucer.: Tetralonia dilecta g 2; Anthophor.: 
Amegilla 2. 

Short-tongued Bees (1)—Halict.: Agapostemon viridulus 9, ¢, n. 

Other Hymenoptera (1)—2Zumen.: Leionotus dorsalis, perfor- 
ating. 

Diptera (2, f, n)—Syrph.: Allograpta; Bombyli.: Anthrax 
sinuosa. 


Ruellia strepens—Blooms May 22—September 13; 1 visitor ob- 
served, June 16; Ma, R. 
Long-tongued Bees (1)—Eucer.: Tetralonia dilecta 9. 


ACERACEAE (anemophilous) 


Acer negundo.—One visitor observed, April 18, 24. 
Long-tongued Bees (1)—Ap.: Apis ¢, ab. 


Acer saccharinum.—One visitor observed, April 10. 
Long-tongued Bees (1)—Ap.: Apis ¢, ab. 


Acer saccharum.—April 4 and 13 the following 22 species were 
taken at exuding sap, 5 never taken on flowers. 

Long-tongued Bees (1)—Ap.: Apis ab. 

Short-tongued Bees (1)—Andren.: Trachandrena rugosa ¢, 3. 

Other Hymenoptera (2)—Bracon.: Earinus 7; Tenthredin.: 
Dolerus sericeus 2. 


22 -FLOWERS AND INSECTS—XXVI 


Diptera (15)—Syrph.: Helophilus similis 1, Syrphus ribesii 3; 
Tachin.: Gonia capitata fq; Sarcophag.: Calliphora erythrocephala 
1, vomitoria 3, Cynomyia 1, Helicobia 4-setosa 1; Musc.: Lucilia 
caesar 4, Muscina 2, Pseudopyrellia 4; Anthomy.: Hydrotaea 3, 
Hyetodosia 25; Agromyz.: Aulacigaster 2; Scatophag.: Scatophaga 
12; Seps.: Prochyliza 10. 

Lepidoptera (3)—Nymphal.: Huvanessa 4, Polygonia comma 2, 
Vanessa atalanta 2. 

AIZOACEAE 

Mollugo verticillata (int, 5: 274).—Blooms June 25—October 
12; 18 species and 29 individuals observed, July 16, August 11, 21; 
Mi, W. 

Short-tongued Bees (5: 13)—Halict.: Chloralictus pilosus 4, 1, 
sparsus 9, se, 4, tegularis J 9, 3, versatus J 9, se, 4, Seladonia J, 1. 
Other Hymenoptera (1: 3)—Philanth.: Cerceris finitima 3. 

Diptera (6: 9)—Syrph.: Mesogramma marginata sf, 4, Paragus 
tibialis 1, Pipiza pulchella 1; Conop.: Zodion nanellum 1; Sarco- 
phag.: Helicobia 4-setosa 1; Musc.: Pseudopyrellia 1. 

Coleoptera (1: 2)—WMalach.: Collops 2. 


ALISMACEAE 

Alisma plantago aquatica—Blooms July 4-August 13; 138 
species and 101 individuals observed, July 20, 21, 1909; Mi, W. 

Short-tongued Bees (6:52)—Halict.: Agapostemon radiatus dj, 
1, Chloralictus coreopsis 9, 1, cressonii (J, 3, sparsus 9, 8, tegularis 
?, 31, Oxystoglossa similis 9, 8. 

Diptera (7:49)—Syrph.: Mesogramma marginata 32, Paragus 
bicolor 2, tibialis 2, Sphaerophoria 10, Syritta 1; Tachin.: Gymno- 
prosopa 1, Senotainia rubriventris 1. 


Sagittaria latifolia—Blooms July 1—-September 25; 122 indi- 
viduals, belonging to 52 species, observed July 25-August 30; 
Mi, W. 

On staminate flowers (24:42) :— 

Long-tongued Bees (2:2, 2)—Ceratin.: Ceratina 9, 1; Mega- 
chil.: Megachile brevis 9, se, 1. 

Short-tongued Bees (5:18, 9, se)—Halict.: Chloralictus sparsus 
5, versatus 7, Evylaeus nelumbonis 1, Odontalictus 4, Oxystoglossa 
confusa 1. 

Other Hymenoptera (4:4)—Humen.: Leionotus anormis 1, 
ziziae 1; Larr.: Tachytes aurulentus 1; Nysson.: Pseudoplisus 
phaleratus 1. 


CHARLES ROBERTSON 23 


Diptera (8:12)—Syrph.: Mesogramma marginata 1, Ortho- 
neura nitida f, 2, Rhingia 1; Empid.: Parempis 1; Bombyli.: Spar- 
nopolius 2; Tachin.: Epigrimyia geniculata 1; Musc.: Lucilia seri- 
cata 1; Anthomy.: Limnophora 3. 

Lepidoptera (3: 3)—Papilion.: Charidryas 1; Lycaen.: Chryso- 
phanus 1; Hesperi.: Limochores taumas 1. 

Coleoptera (2: 3)—Chrysomel.: Diabrotica 12-punctata 1; Coc- 
cinell.: Megilla f, in cop, 2. 

On staminate and pistillate flowers (17: 66) :— 

Long-tongued Bees (2:13)—Ap.: Apis 3; Bomb.: Bombus 
americanorum 9%, se, 10. 

Short-tongued Bees (4: 18)—Halict.: Agapostemon viridulus ¢, 
5, Chloralictus pilosus 9, se, 3, Evylaeus pectoralis ¢ 9, se, 8, Oxysto- 
glossa similis 9, se, 2. 

Other Hymenoptera (3:12)—Scoli.: Elis interrupta 2, 5-cincta 
7; Eumen.;: Leionotus arvensis 3. 

Diptera (4:10)—Syrph.: Syritta 2; Tachin.: Archytas analis 
3, Cyphocera 2; Musc.: Lucilia sylvarum 3. 

Lepidoptera (3:9)—Nymphal.: Phyciodes 3; Hespert.: An- 
cyloxypha 2; Ctenuch.: Scepsis 4. 

Coleoptera (1:4)—Lampyr.: Chauliognathus pennsylvanicus 4. 

On pistillate flowers (11:14) :— 

Short-tongued Bees (2:2)—Halict.: Augochlora fervida 92, 1, 
viridula 9, 1. 

Other Hymenoptera (3:4)—Sphec.: Priononyx atrata 1; 
Philanth.: Cerceris compacta 1 ; Vesp.: Polistes pallipes 2. 

Diptera (5:7)—Tachin.: Spallanzania 1, Trichophora 3; Sar- 
cophag.: Helicobia helicis 1, Sarcophaga sinuata 1; Musc.;: Lucilia 
caesar 1. 

Lepidoptera (1: 1)—Papilion.: Eurymus 1. 


AMARANTHACEAE (anemophilous) 


Amaranthus spinosus (int).—One visitor observed, July 19. 
Long-tongued Bees (1)—Ap.: Apis se, fq. 


AMARYLLIDACEAE 

Hypoxis hirsuta (5: 69).—Blooms April 23—June 12; 16 visitors 
observed, May 10-19; Mi, Y. 

Long-tongued Bees (4, 2, c)—Ceratin.: Ceratina ab; Megachil.: 
Osmia atriventris, illinoensis fq, distincta. 

Short-tongued Bees (9, 9, ¢)—Halict.: Chloralictus eressonii, 
sparsus, tegularis, versatus, Curtisapis coriacea, Dialictus anomalus 
type, Evylaeus pectoralis, Odontalictus, Oxystoglossa similis ab. 


24 FLOWERS AND INSECTS—XXVI 


Diptera (2, f)—Syrph.: Mesogramma marginata, Sphaerophoria. 
Coleoptera (1, £)—Buprest.: Acmaeodera culta. 


ANACARDIACEAE 

Rhus canadensis (9:161-3).—Blooms April 4-May 2; 33 visi- 
tors observed, April 4-19; Mis, Y. 

Long-tongued Bees (2)—Ceratin.: Zaodontomerus ¢; Nomad.: 
Gnathias cuneatus ¢ 9, fq. 

Short-tongued Bees (21)—Halict. (2): Agapostemon texanus, 
Chloralictus cressonii, foveolatus, sparsus, zephyrus fq, Curtisapis 
forbesii fq, Evylaeus foxii fq, Odontalictus, Oxystoglossa confusa ; 
Collet.: Colletes inaequalis 4; Andren.: Andrena carlini ¢ 9, faq, 
erythrogastra ?, mandibularis ¢ 9, fq, salictaria 9, tridens J, 
Opandrena cressonii , miserabilis ¢ 9, fq, Trachandrena claytoniae 
Jb 9, ab, forbesii J 2, fq, mariae J, fq, rugosa Ji Q, ab. 

Other Hymenoptera (1)—Ichneumon: Lampronota coxalis. 

Diptera (9)—Syrph.: Eristalis dimidiatus, Syrphus americanus 
fq, ribesii; Empid.: Rhamphomyia priapulus; Tachin.: Gonia 
capitata fq; Sarcophag.: Cynomyia; Musc.: Pseudopyrellia fq; 
Lonchae.: Lonchaea aberrans; Sciomyz.: Tetanocera. 


Rhus copallina——Blooms July 19—August 10; 74 visitors ob- 
served, July 26-28; Pol (Mis), Y. 

On pistillate flowers :— 

Long-tongued Bees (8)—Ap.: Apis ab; Bomb.: Bombias separa- 
tus S$; Megachil.: Trypetini: Neotrypetes truncatus ¢; Megachilini: 
Megachile generosa ¢, mendica ¢'; Coelioxyini: Coelioxys 8-dentata 
Jo Y, sayi 3'; Eucer.: Melissodes bimaculata &. 

Short-tongued Bees (15)—Halict.: Agapostemon radiatus ¢ Q, 
Augochlora fervida <', Chloralictus pilosus ¢' 9, sparsus 9, ab, 
versatus ¢ 2, ab, zephyrus 9, fq, Halictus lerouxii ¢ 9, ab, parallelus 
3 2, Oxystoglossa confusa 9, similis ¢', Seladonia ¢ 92, ab; 
Sphecodini: Drepanium 9, Sphecodes arvensis ¢ 9, fq; Prosopid.: 
Prosopis illinoensis 9, pygmaea ¢ 9. 

Other Hymenoptera (29)—Sphec.: Ammobia ichneumonea, 
pennsylvanica, Isodontia apicalis, Sphex gracilis, nigricans, vul- 
garis; Scoli.: Elis interrupta, 5-cincta, Scolia bicincta; Philanth.: 
Cerceris fumipennis, Eucerceris, Philanthus punctatus fq, venti- 
labris; Vesp.: Polistes rubiginosus, variatus; Humen.: Leionotus 
arvensis fq, dorsalis, foraminatus fq, 4-sectus; Crabron.: Ana- 
erabro, Lindenius errans, Solenius; Oxybel.: Notoglossa americana, 
frontalis, Oxybelus packardii; Larr.: Tachytes distinectus; Pompil.: 
Arachnoproctonus, Poecilopompilus navus; Chalcid.: Leucospis. 


CHARLES ROBERTSON 25 


Diptera (22)—Stratiomy.: Stratiomyia meigenii; Syrph.: 
Allograpta, Mesogramma marginata, Syritta fq; Conop.: Conops 
brachyrrynchus, Oncomyia, Physocephala tibialis, Zodion nanellum ; 
Tachin.: Archytas analis fq, Linnaemyia fq, Ocyptera lata, Phor- 
antha purpurascens, Senotainia trilineata fq, Trichopoda pennipes, 
Trichophora; Sarcophag.: Helicobia helicis, Sarcophaga cimbicis; 
Musc.: Compsomyia fq, Lucilia sylvarum, Musca, Pseudopyrellia 
fq; Anthomy.: Calythea. 


Rhus glabra (7: 111-12)—Blooms May 27-—July 7; 114 vis- 
itors observed, June 5—July 7; Mis, Y. 

On staminate flowers (57) :— 

Long-tongued Bees (4)—Bomb.: Bombias separatus %, sc; 
Stelid.: Microstelis 9; Megachil.: Trypetini: Neotrypetes truncatus 
3b 2, se, fq; Coelioxyini: Coelioxys sayi 9. 

Short-tongued Bees (11)—Halict.: Curtisapis fuscipennis 9, se, 
Evylaeus arcuatus ¢ 9, se, ab, Oxystoglossa confusa ?, se; Sphe- 
eodini: Sphecodes arvensis 2; Prosopid.: Prosopis illinoensis 9, 
ziziae ¢ 9, sf; Collet.: Colletes aestivalis J 9, nudus ¢; Andren.: 
Andrena platyparia 9, se, Opandrena cressonii ?, se, Trachandrena 
nuda ¢. 

Other Hymenoptera (10)—Bembic.: Bicyrtes ventralis; 
Philanth.: Cerceris compar, fumipennis, insolita, Philanthus pune- 
tatus; Eumen.: Ancistrocerus campestris, Leionotus arvensis, 
Monobia, Zethus; Crabron.: Solenius. 

Diptera (29)—Stratiomy.: Stratiomyia apicula, meigenii, 
quaternaria; Syrph.: Baccha fuscipennis, Ceria, Eristalis dimidi- 
atus, flavipes, tenax, transversus, Mallota cimbiciformis, posticata, 
Mesogramma geminata, Orthoneura nitida, Sphaerophoria, Sphe- 
gina rufiventris, Syrphus americanus, ribesii; Empid.: Parempis 
fq, Bombyli.: Anthrax alternata, sinuosa f, Bombylius atriceps; 
Conop.: Conops brachyrrhynchus, Zodion fulvifrons, nanellum; 
Tachin.: Hypostena variabilis, Siphona; Musc.: Lucilia caesar, 
Morellia; Anthomy.: Limnophora. 

Lepidoptera (3)—Nymphal.: Neonympha; eens Cyaniris, 
Thecla calanus. 

On staminate and pistillate flowers (18) :— 

Long-tongued Bees (1)—Ceratin.: Ceratina 9, se. 

Short-tongued bees (10)—Halict.; Agapostemon radiatus 9, 
se, viridulus 9, se, Chloralictus pilosus 9, sc, pruinosus ¢ 9, se, 
sparsus 9, sc, ab, versatus ¢ 9, se, ab, zephyrus ¢ 9, se, ab, Halictus 
lerouxii ¢ 9, se, fq; Collet.: Colletes eulophi ¢ 9, ab; Andren.: 
Opandrena serotina ¢ 9, se, fq. 


26 FLOWERS AND INSECTS—XXVI 


Other Hymenoptera (3)—Sphec.: Sphex vulgaris; Philanth.: 
Cerceris robertsonii fq; Oxybel.: Notoglossa americana. 

Diptera (4)—Syrph: Allograpta, Mesogramma marginata fq; 
Conop.: Physocephala tibialis; Tachin.: Ocyptera tenuis. 

On pistillate flowers (39) :— 

Long-tongued Bees (3)—Ap.: Apis ab; Bomb.: Bombias auri- 
comus 2; Ceratin.: Zaodontomerus ¢. 

Short-tongued Bees (7, 9)—Halict.: Chloralictus tegularis, 
Halictus parallelus, Oxystoglossa similis, Seladonia; Prosopid.: 
Prosopis pygmaea; Collet.: Colletes willistonii ab; Andren.: 
Trachandrena crataegi. 

Other Hymenoptera (10)—Sphec.: Isodontia apicalis, Prion- 
onyx thomae, Sphex procera; Philanth.: Cerceris compacta fq; 
Vesp.: Polistes pallipes; Humen.: Leionotus anormis fq; Oxybel.: 
Notoglossa frontalis; Pemphredon.: Mimesa; Pompil.: Pompiloides 
marginatus; Bracon.: Vipio. 

Diptera (18)—Syrph.: Syritta; Tachin.: Archytas analis ab, 
aterrima, Belvosia bifasciata, Cyphocera, Pachyophthalmus flori- 
densis, Peleteria, Spallanzania; Sarcophag.: Helicobia helicis, 
4-setosa, Sarcophaga cimbicis, hunteri, sinuata; Musc.: Lucilia 
sylvarum, Pseudopyrellia, Stomoxys; Anthomy.: Phorbia acra, 
platura. 

Coleoptera (1)—WMordell.: Mordella melaena. 

June 17, 1913, the following 17 species and 51 india were 
taken on pistillate flowers of Rhus glabra: 

Long-tongued Bees (3:19)—Bomb.: Bombias auricomus 1; 
Ceratin.: Ceratina 17, Zaodontomerus 1. 

Short-tongued Bees (10: 28)—Halict.: Agapostemon radiatus 
2, viridulus 1, Chloralictus pilosus 1, sparsus 9, tegularis 1, versatus 
6, zephyrus 2, Oxystoglossa similis 2; Prosopid.: Prosopis pygmaea 
1; Andren.: Opandrena serotina 3. 

Other Hymenoptera (1:1)—Sphec.: Sphex procera 1. 

Diptera (3:3)—Syrph.: Allograpta 1, Syritta 1; Tachin.: 
Peleteria 1. 

Rhus toxicodendron.—Blooms May 18-June 29; 1 visitor 
observed, June 8; Mis, Y. 

Short-tongued Bees (1)—Andren.: Trachandrena crataegi 9, se. 


. ANONACEAE 
Asimina triloba (16: 154-5).—Blooms April 10—May 27; 8 visi- 
tors observed, May 5; Mi, R. 


CHARLES ROBERTSON 27 


Diptera (8)—Syrph.: Syrphus americanus; Sarcophag.: Cyno- 
myia fq, Helicobia helicis, 4-setosa, Sarcophaga: sinuata; Musc.: 
Phormia regina; Anthomy.: Phorbia platura; Scatophag.: Scato- 
phaga. 

APOCYNACEAE 

Apocynum androsaemifolium.—Blooms May 10—July 28; 12 
visitors observed, July 16, 25; Mis, W. 

Long-tongued Bees (1)—Nomad.: Centrias americanus ?, mp. 

Short-tongued Bees (5, no pol.) —Halict.: Chloralictus versatus 
9, zephyrus 2, Oxystoglossa confusa ¢, similis ¢ 9; Prosopid.: 
Prosopis sayi 9. 

Other Hymenoptera (1)—Sphec.: Sphex vulgaris, no pol. 

Diptera (5, n)—Tachin.: Linnaemyia, Trichophora; Musc.: 
Graphomyia, Lucilia sylvarum ; Anthomy.: Phorbia acra. 


Apocynum cannabinum (4:70).—Blooms May 18-August 12; 
48 visitors observed, June 1—July 17; Mis, W. 

With pollinia (9) :— 

Long-tongued Bees (3)—Ap.: Apis lp; Nomad.;: Centrias ameri- 
eanus ¢ 9, fq, mp, lp; Holonomada affabilis ¢, lp. 

Short-tongued Bees (3, mp)—Halict. (2) : Agapostemon radia- 
tus, Oxystoglossa confusa; Collet.: Colletes productus 0, type. 

Other Hymenoptera (3)—Sphec.: Isodontia apicalis t; Bembic.: 
Bicyrtes ventralis mp ; Ewmen.: Leionotus foraminatus t. 

Without pollinia (39) :— 

Long-tongued Bees (3)—Stelid.: Microstelis 9; Megachil.: 
Megachilini: Chelostomoides 2; Coelioxyini: Coelioxys 8-dentata 
o 2. 

Short-tongued Bees (6)—Halict.: Augochlora viridula Q, 
Chloralictus versatus ¢ 2, Seladonia 2; Prosopid.: Prosopis ziziae 
2; Collet.: Colletes aestivalis ¢; Macropid.: Macropis ¢, fq. 

Other Hymenoptera (4)—Sphec.: Priononyx atrata, thomae, 
Sphex vulgaris; Larr.: Astatus unicolor. 

Diptera (21, n)—Mycetophil.: Sciara atrata; Syrph.: Allo- 
grapta, Eristalis dimidiatus, Helophilus laetus, Sphaerophoria, 
Tropidia mamillata, quadrata; Empid.: Parempis; Bombyli.: 
Anthrax alternata, Bombylius atriceps; Tachin.: Archytas analis,, 
Cistogaster occidua, Linnaemyia, Ocyptera tenuis, Spallanzania, 
Trichophora; Sarcophag.: Helicobia helicis; Musc.: Compsomyia, 
Phormia regina ; Anthomy.: Limnophora, Phorbia acra. 

Lepidoptera (2, n)—Nymphal.: Argynnis; Lycaen.: Thecla 
calanus. 


28 FLOWERS AND INSECTS—XXVI 


Coleoptera (1)—Scarabae.: Trichius piger n. 
Hemiptera (2, n)—Caps.: Lygus; Lygae.: Lygaeus. 


ARACEAE 
Arisaema triphyllum.—Blooms April 27—July 1; 1 visitor ob- 
served, May 11, also twenty specimens belonging to about seven 
species of Nematocera; Mi, Y. 
Hemiptera (1)—WNab.: Coriscus. 


ARISTOLOCHIACEAE 
Aristolochia tomentosa.—Blooms May 9-June 24; 5 visitors 
observed, May 15—June 13; Mi, Y. 
Diptera (4)—Chironom.: Ceratopogon websteri; Mycetophil.: 
Sciara atrata, vulgaris; Phor.: Phora. 
Coleoptera (1)-——Melandry.: Canifa. 


ASCLEPIADACEAE 

According to the situation of the pollinia the insects carrying 
them are marked: c=claws, emp=empodium, f= face, g=glossa, 
h=tarsal hairs, 1=labrum, lp =labial palpi, mp = maxillary palpi, 
p=pulvillus, sp = tibial spur, t = proboscis, usually palpi, vs = hairs 
of ventral surface. 

Acerates floridana (1: 245-7; 13:576-7).—Blooms June 24— 
August 16; 18 visitors observed, July 5-August 16; Mas, W. 

With polluma (10) :— 

Long-tongued Bees (6:21)—Ap.: Apis vs; Bomb.: Bombias 
scutellaris $, vs, ab, separatus ¢ ? G, 1, t, vs, ab; Megachil.: 
Megachile generosa 9, vs, mendica 9, vs. 

Other Hymenoptera (4)—Sphec.: Priononyx atrata vs; Bembic.: | 
Bembix nubillipennis 1, ab; Philanth.: Cerceris bicornuta vs, f, t; 
Pompil.: Priocnemoides unifasciatus vs, t. 

Coleoptera (1)—Scarabae.: Trichius piger vs. 

Without pollinia (8) :— 

Long-tongued Bees (1)—Megachil.: Megachile brevis 9. 

Other Hymenoptera (5)—Scoli.: Elis 5-cincta; Philanth.: Cer- 
ceris compar; Vesp.: Polistes variatus ; Hwmen.: Leionotus arvensis ; 
Bracon.: Orgilus. 

Lepidoptera (2)—Lycaen.: Chrysophanus; Ctenuch.: Scepsis fq. 


Acerates viridiflora (1:247-8).—Blooms June 8—July 29; 5 
visitors observed, June 14—July 29; Mas, Y. 

Long-tongued Bees (3, h)—Bomb.: Bombias scutellaris 9, sepa- 
ratus 9, fq; Hucer.: Anthedon ~&. 


CHARLES ROBERTSON 29 


Other Hymenoptera (2)—JLarr.: Tachytes mandibularis h; 
Eumen.: Leionotus arvensis, no pollinia. 


Asclepias incarnata (1: 209; 13: 571-2).—Blooms July 5—Sep- 
tember 2; 112 visitors observed, July 22-September 2; Pol (Mas), R. 

With pollinia (88) :— 

Long-tongued Bees (12)—Ap.: Apis h, t, ab, one dead; Bomb.: 
Bombias auricomus ¢ 9° 9, h, ¢, fq, scutellaris ¢ Y, h, ¢, t, fq, sepa- 
ratus ¢ ? Y, h, ec, Bombus americanorum ¢ @ Y, h, ¢, t, consimilis 
d, h, ¢, t, impatiens 9 &, h, e, t, Psithyrus laboriosus ¢, h, e, lp; 
Eucer.: Epimelissodes atripes 9, h, Melissodes comptoides ¢, h, 
trinodis ?, h; Emphor.: Melitoma 2, h. 

Short-tongued Bees (6)—Halict.: Augochlora fervida ¢ 9, h, fq, 
Curtisapis coriacea ¢, h, t, Halictus lerouxii ¢, p, Oxystoglossa 
similis ¢, t, Seladonia ?, h; Collet.: Colletes latitarsis ?, h, ¢, t, dead, 

Other Hymenoptera (42)—Sphec.: Ammobia ichneumonea h, 
nuda h, pennsylvaniea h, ¢, t, fq, Isodontia apicalis h, macrocephala 
h, Priononyx atrata h, fq, thomae h, fq, Seeliphron h, one dead; 
Bembic. (h): Bembix nubillipennis fq, spinolae, Megastizus, Sphe- 
cius fq, Stictia; Scoli.: Elis interrupta h, t, obseura‘h, 5-cincta h, 
e, t, fq, Seolia bicincta h; Philanth.: Cerceris bicornuta h, ¢, t, fq, 
clypeata h, ec, compacta h, ¢, finitima t, fumipennis p; Vesp.: Polistes 
pallipes h, ¢, rubiginosus h, ¢, variatus h, ¢, Vespula cuneata h, e¢, 
t, fq, germanica h, maculata h, vidua h, ¢, t; Lwmen.: Leionotus 
arvensis h, ¢, t, ab; Crabron.: Protothyreopus rufifemur ¢; Oxybel.: 
Oxybelus packardii ce, t; Larr.: Tachytes aurulentus h, distinctus h, 
mandibularis h, t, fq, pepticus h; Nysson.: Pseudoplisus phaleratus 
h; Pompil. (h): Ageniella accepta, Arachnoproctonus, Episyron, 
Lophopompilus atrox, Priocnemoides unifasciatus. 

Diptera (8)—Stratiomy.: Stratiomyia meigenii ¢; Mida.: Midas 
clavatus h, t, tibialis p; Conop.: Conops xanthopareus p, fq, Physo- 
cephala tibialis h; Tachin.: Cistogaster occidua t, n, Panzeria ¢, 
Trichopoda lanipes h. 

Lepidoptera (15)—Nymphal.: Anosia h, Argynnis h, Basilarchia 
archippus h, Hypatus h, Speyeria h, Vanessa atalanta h, ¢; 
Papilion.: Euphoeades h, Eurymus h, Heraclides h, Jasoniades h, ¢, 
Laertias h, Papilio h, e, Pieris h, ¢; Hesperi.: Achalarus h, Limo- 
chores taumas h. 

Coleoptera (3)—Lampyr.: Chauliognathus pennsylvanicus h, ¢, 
t, ab; Scarabae.: Euphoria sepulchralis, h, ¢, t, ab, Trichius piger h. 

Hemiptera (2)—Lygae.: Lygaeus h, Oncopeltus h. 

Without pollinia (24) :-— 

Birds (1)—Trochil.: Trochilus n. 


30 FLOWERS AND INSECTS—XXVI 


Long-tongued Bees (1)—Megachil.: Megachile brevis ¢ 9. 

Short-tongued Bees (1)—Halict.: Chloralictus versatus d', n. 

Other Hymenoptera (3)—Eumen.: Eumenes fraternus; Oxybel.: 
Notoglossa americana; Pompil.: Priocnemoides fulvicornis. 

Diptera (9)—Bombyli.: Sparnopolius n; Conop.: Conops 
brachyrrhynchus n, Stylogaster biannulata n; Tachin.: Gymno- 
prosopa n, Ennyomma globosa n, Masiphya n, Opsidia n, Phasio- 
cliata n, Spallanzania. 

Lepidoptera (6)—Nymphal.: Phyciodes; Hespert.: Epargyreus, 
Euphyes verna, Pholisora catullus, Polites; Ctenuch.: Scepsis. 

Coleoptera (3, n)—Buprest.: Acmaeodera pulchella; Cerambyc. 
Tetraopes gn; Melo.: Epicauta vittata gn, fq. 


Asclepias purpurascens (1:213; 18:576).—Blooms May 27- 
July 15; 386 visitors observed, June 2-28; Mas, R. 

With pollinia (14) :— 

Long-tongued Bees (5)—Ap.: Apis h; Megachil.: Megachile 
addenda 9, h, mendica 3, h; Eucer.: Tetralonia rosae 9, h; Antho- 
phor.: Anthemoessa ¢ 9, h, p, fq. 

Diptera (2)—Conop.: Physocephala tibialis h; Tachin.: Spallan- 
zania p. 

Lepidoptera (5, h)—Nymphal.: Argynnis fq, Euphydryas, 
Speyeria, Vanessa atalanta, huntera; Hespert.: Thorybes pylades. 

Hemiptera (1)—Lygae.: Oncopeltus h. 

Without pollinia (28) :— 

Birds (1)—Trochil.: Trochilus n. 

Long-tongued Bees (3, 9)—Bomb.: Bombias separatus, Bombus 
americanorum, consimilis; Anthophor.: Anthophora. 

Short-tongued Bees (4, 9, n)—Halict.: Augochlora fervida, 
Chloralictus versatus, Evylaeus pectoralis, Oxystoglossa confusa, 
similis. 

Other Hymenoptera (1)—Sphec.: Priononyx atrata. 

Lepidoptera (13)—Nymphal.: Anosia; Lycaen.: Chrysophanus, 
Everes, Thecla calanus, sylvinus; Papilion.: Euphoeades, Kurymus, 
Heraclides, Jasoniades, Laertias; Hespert.: Euphyes verna, Limo- 
chores manataaqua, taumas, Pamphila hobomok, Polites. 

Coleoptera (1)—Cerambyc.: Tetraopes gn, n. 

June 19-28, the following 22 species and 58 individuals were 
taken on the flowers :— 

With pollinia (4:14) :— 

Long-tongued Bees (2:5)—Ap.: Apis 4; Anthophor.: Anthe- 
moessa 9, 1. | 

Lepidoptera (2:9)—Nymphal.: Argynnis 6, Vanessa hunt- 
era 3. 


CHARLES ROBERTSON 31 


Without pollinia (20: 44) :— 

Birds (1:1)—Trochil.: Trochilus 1. 

Long-tongued Bees (3:9, 2)—Bomb.: Bombias separatus 1; 
Anthophor.: Anthemoessa 7, Anthophora 1. 

Short-tongued Bees (4:7, 9)—Halict.: Augochlora fervida 2; 
Chloralictus versatus 1, Evylaeus pectoralis 3, Oxystoglossa 
similis 1. 

Lepidoptera (9:23)—Nymphal.: Argynnis 1; Papilion.: 
Euphoeades 3, Heraclides 1, Jasoniades 5, Laertias 3; Hespert.: 
Euphyes verna 1, Limochores taumas 2, Polites 2, Thorybes 
pylades 5. 

Diptera (2:3)—Tachin.: Trichophora 2, Spallanzania 1. 

Hemiptera (1:1)—Lygae.: Oncopeltus 1. 


Asclepias sullivantii (1: 210-12; 13:574-5)—Blooms June 
10-August 23; 90 visitors observed, June 19-August 20; Mas, R. 

With pollinia (25) :— 

Long-tongued Bees (11)—Bomb.: Bombias auricomus ¢ 9, ¢, Pp, 
sp, scutellaris 9 9, ec, separatus 2 9, ce, fg, Bombus americanorum Q, 
h, ¢, Psithyrus variabilis 2, ec, sp, h; Megachil.: Megachile petulans 
4, ¢, Xanthosarus ¢ ?, ¢; Epeol.: Argyroselenis 2, p, n, Epeolus 
bifasciatus ¢, p, n; Eucer.: Florilegus 4, p, Melissodes coreopsis 
9, P- 

Other Hymenoptera (4)—Sphec.: Priononyx thomae h, Sceli- 
phron ec; Bembic.: Bembix nubillipennis ¢; Ichnewmon.: Ichneumon 
flavizonatus, on antenna, n. 

Diptera (3)—Stratiomy.: Stratiomyia meigenii c, emp; Conop.: 
Physocephala tibialis p, Zodion obliquefasciatum p. 

Lepidoptera (7)—Nymphal.: Anosia ¢, h, sp, Argynnis ¢; 
Lycaen.: Strymon h, n; Papilion.: Eurymus ¢, Papilio ¢; Hespert.: 
Epargyreus ce, Limochores manataaqua ¢. 

Without pollinia, (46) :— 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (4)—Ceratin.: Ceratina 9; Megachil.: 
Megachilini: Megachile generosa ¢ 9, ab, mendica ¢; Coelioxyini: 
Coelioxys 8-dentata ¢ 9, fq. 

Short-tongued Bees (9)—Halict.: Augochlora viridula 9, Chlora- 
lictus pilosus 2, sparsus 9, tegularis <4, versatus ¢ 2, Oxystoglossa 
pura ¢ 9, confusa ¢ 9; Sphecodini: Drepanium ¢ 2, fq, Sphecodes 
arvensis 9. 

Other Hymenoptera (12)—Sphec.: Priononyx atrata; Bembic.: 
Bembix spinolae, Microbembex fq; Scoli.: Elis 5-cineta; Cercer.: 
Cerceris clypeata, finitima; Philanth.: Philanthus punctatus; 


32 | FLOWERS AND INSECTS—XXVI 


Eumen.: Leionotus arvensis; Crabron.: Protothyreopus rufifemur ; 
Oxybel.: Notoglossa americana; Larr.: Lyroda, Tachytes mandib- 
ularis fq. 

Diptera (7)—Syrph.: Tropidia quadrata; Tachin.: Chaeto- 
gaedia analis (acroglossoides type), Linnaemyia, Phorantha humer- 
alis, Senotainia rubriventris, trilineata; Sarcophag.: Helicobia 
helicis. 

Lepidoptera (10)—Nymphal.: Phyciodes, Vanessa atalanta; 
Lycaen.: Chrysophanus, Everes, Uranotes; Hesperi.: Kuphyes 
metacomet, Limochores taumas, Thorybes pylades; Sphing.: 
Hemaris axillaris; Sest.: Sesia 6-fasciata. 

Coleoptera (1)—Curculion.: Centrinus scutellum album fq. 

Hemiptera (2)—Caps.: Calocoris; Pentatom.: Podisus, pred. 

The following insects were found entrapped and dead on the 
flowers (19) : 

Long-tongued Bees (6)—Ap.: Apis 671 9, 1 ¢; Megachil.: 
Anthemois ¢ 2, e, p, Megachile addenda ¢ 9, brevis ¢ 9, ¢, Sayapis 
pugnata ¢'; Eucer.: Peponapis J. 

Short-tongued Bees (38, ¢)—Halict.: Halictus lerouxii ¢, p, 
Odontalictus, Seladonia. 

Other Hymenoptera (3)—Sphec.: Isodontia apicalis h, c, Sphex 
pictipennis ¢; Larr.: Astatus bicolor. 

Diptera (4)—Syrph.: Eristalis aeneus ¢, Syritta; Bombylt.: 
Sparnopolius; Musc.: Pseudopyrellia. 

Lepidoptera (2)—Hesperi.: Polites p; Ctenuch.: Scepsis. 

Coleoptera (1)—Scarabae.: Trichius piger ec. 

The following 22 species and 140 individuals were taken on the 
flowers, June 19, 20, 1911: 

With pollinia (6:9) :— 

Long-tongued Bees (2:5)—Bomb.: Bombus americanorum 3; 
Megachil.: Xanthosarus 2. 

Diptera (1: 1)—Conop.: Physocephala tibialis 1. 

Lepidoptera (8:3)—Nymphal.: Argynnis 1; Hespert.: Epargy- 
reus 1, Limochores manataaqua 1. 

Without pollinia (20: 1381) :— 

Long-tongued Bees (4:22)—Megachil.: Megachile brevis 18, 
generosa 1, mendica 1, Xanthosarus 2. 

Short-tongued Bees (4: 86)—Halict.: Chloralictus pilosus 1, 
tegularis 1, versatus 83, Oxystoglossa confusa 1. 

Other Hymenoptera (4:7)—Sphec.: Priononyx atrata 1; 
Bembic.: Bembix nubillipennis 1, spinolae 1; Larr.: Tachytes 
mandibularis 4. 


CHARLES ROBERTSON 33 


Lepidoptera (8:16)—Nymphal.: Argynnis 2, Phyciodes 1; 
Lycaen.: Uranotes 1; Hesperi.: Epargyreus 1, Euphyes metacomet 
1, Limochores manataaqua 8, Thorybes pylades 1; Sphing.: Hemaris 
axillaris 1. 

Asclepias syriaca (1: 209-10; 13: 572-4).—Blooms June 1- 
August 15; 99 visitors observed, June 7—-August 7; Mas, R. 

With pollinia (60) :— 

Long-tongued Bees (15)—Bomb.: Bombias separatus 9 9, t; 
Megachil.: Megachilini: Megachile generosa ¢, t, petulans 9, t; 
Coelioxyini: Coelioxys 8-dentata ¢ 9, ¢, n; Epeol.: Epeolus bi- 
fasciatus ¢', p, n, Triepeolus remigatus 4, p; Eucer.: Florilegus 
o 2, p, g, Melissodes agilis 4, p, comptoides 4, p, petalostemonis Q, 
p, Peponapis ¢ 2, h, p, t, fq, Tetralonia dilecta 9, p, rosae 9, h, 
Xenoglossa 9, p; Anthophor.: Anthomoessa , p. 

Short-tongued Bees (6)—WHalict. (n) : Agapostemon radiatus ¢, 
p, Halictus lerouxii <4, p, Seladonia 9, ¢; Sphecodini: Proteraner 
3, p; Collet.: Colletes latitarsis J, p, lp, nudus 9, p. 

Other Hymenoptera (12)—Sphec.: Ammobia ichneumonea h; 
Priononyx atrata p, fq, thomae h; Bembic.: Bembix nubillipennis 
h, Stictia p; Scoli.: Campsomeris h, ¢, Elis obscura p, 5-cincta h, 
Seolia bicincta h; Philanth.: Cerceris bicornuta h; Eumen.: 
Leionotus arvensis h; Larr.: Tachytes mandibularis h. 

Diptera (14)—Syrph.: Eristalis dimidiatus p, t, Mallota cimbici- 
formis p, t, illinoensis p, Syritta p, Tropidia mamillata p, quadrata 
h; Mida.: Midas eclavatus t; Conop.: Physocephala texana p; 
Tachin.: Archytas analis p, Belvosia bifasciata p, unifasciata p, 
Linnaemyia p, Trichopoda plumipes p, t; Anthomy.: Hyetodosia p. 

Lepidoptera (8)—Nymphal.: Anosia h, Argynnis h, Euvanessa 
h, ec, Polygonia interrogationis h, t, Vanessa atalanta h; Hesperi.: 
Achalarus h; Sphing.: Choerocampa h; Ctenuch.: Scepsis h. 

Coleoptera (1)—Lampyr.: Photinus h. 

Hemiptera (4)—Lygae.: Lygaeus h, p, e¢, Oncopeltus h; 
Pentatom.: Euschistus variolarius h, Podisus p, pred, n. 

Without pollinia (31) :— 

Long-tongued Bees (4)—Bomb.: Bombias auricomus %, Bombus 
americanorum 9; Megachil.: Megachile brevis 2; Eucer.: Epimelis- 
sodes obliqua ¢. 

Short-tongued Bees (1)—Halict.: Augochlora viridula ?, n. 

Other Hymenoptera (2)—Sphec.: Sceliphron; Philanth.: Cer- 
ceris clypeata. 

Diptera (5, n)—Culic.: Culex stimulans; Stratiomy.: Odon- 
tomyia cincta; Bombyli.: Anthrax sinuosa; Conop.: Stylogaster 
biannulata; Tachin.: Cistogaster occidua. 


34 FLOWERS AND INSECTS—XXVI 


Lepidoptera (13)—Nymphal.: Basilarchia archippus, Speyeria ; 
Lycaen.: Chrysophanus, Thecla calanus; Paptlion.: Eurymus, 
Laertias, Papilio; Hesperi.: Epargyreus, Limochores taumas, 
Pholisora catullus, Polites; Pyraust.: Loxostege. 

Coleoptera (4, n)—Cerambyc.: Tetraopes gn; Elater.: Mela- 
notus gn; Scarabae.: Macrodactylus gn, Trichius piger. 

Hemiptera (2, n)—Caps.: Lygus; Reduvi.: Sinea. 

The following visitors were found dead on the flowers (8) :— 

Long-tongued Bees (1)—Ap.: Apis ab, p, t. 

Diptera (4)—Tachin.: Spallanzania p; Sarcophag.: Sarcophaga 
cimbicis p; Musc.: Pseudopyrellia, Stomoxys. 

Lepidoptera (3)—Arcti.: Callimorpha p; Noctu.: Drasteria 
erechtea h, Agrotis. 


Asclepias tuberosa (1: 212-13; 13: 575-6).—Blooms June 6— 
September 5; 29 visitors observed, June 14-August 17; Mas, Y. 

With pollinia (19) :— 

Long-tongued Bees (5)—Ap.: Apis h; Stelid.: Anthidium cog- 
natum 4, h; Megachil.: Coelioxys 8-dentata ?, h, ec; Hucer.: Melis- 
sodes petalostemonis 2, h, variabilis 2, h. 

Short-tongued Bees (1)—Halict.: Augochlora fervida 9, ¢, fq. 

Other Hymneoptera (4, h)—Sphec.: Ammobia ichneumonea, 
Priononyx thomae, Sphex nigricans, procera ab. 

Diptera (1)—Tachin.: Spallanzania h. 

Lepidoptera (8, h)—Nymphal.: Argynnis, Speyeria; Papilion.: 
Euphoeades, Eurymus, Laertias, Papilio, Pontia; Ctenuch.: Scepsis. 

Without pollinia (10) :-— 

Birds (1)—Trochil.: Trochilus n. 

Long-tongued Bees (2)—Megachil.: Cyphopyga 9, Megachile 
brevis ¢ 9. 

Other Hymenoptera (1)—Sphec.: Priononyx atrata. 

Lepidoptera (6)—Nymphal.: Anosia, Phyciodes; Lycaen.: 
Chrysophanus, Everes, Strymon; Papilion.: Jasoniades. 


Asclepias verticillata (1: 207-8; 13: 569-71).—Blooms June 
26-September 4; 131 visitors observed, June 26—August 21; Pol, W. 

With pollinia (71) :— 

Long-tongued Bees (10)—Ap.: Apis h; Bomb.: Bombias sepa- 
ratus ¢' 2 9, h, fq, Bombus impatiens %, h, Psithyrus laboriosus; 
©, h; Ceratin.: Ceratina 9, h, c, p, fq; Megachil.: Trypetini: Neo- 
trypetes barbatus 9, p, type; Megachilini: Megachile brevis ¢ 9, 
h, t, fq; Coelioxyini: Coelioxys 8-dentata 3, h; Epeol.: Triepeolus 
concolor ¢', h; Eucer.: Melissodes bimaculata ¢ 9, h, t, fq. 


CHARLES ROBERTSON 35 


Short-tongued Bees (10)—Halict.: Augochlora fervida ¢ 9, h, 
Chloralictus pilosus 9, mp, versatus ¢ ?, p, Curtisapis forbesii ¢, 
lp, Evylaeus pectoralis 9, h, Halictus lerouxii ¢ 9, h, ¢, t, Seladonia 
o 2, h, p, ab; Sphecodini: Machaeris stygia 9, h, Sphecodes arvensis 
3, h, t; Prosopid.: Prosopis ziziae 9, p. 

Other Hymenoptera (32)—Sphec. (h): Ammobia ichneumonea 
fq, pennsylvanica, Isodontia apicalis, Priononyx thomae; Bembic.: 
Bembix numbilipennis h; Scoli.: Elis obscura h, 5-cincta h, t, fq, 
Seolia bicincta h; Philanth.: Cerceris bicornuta h, ab, clypeata h, 
e, fq, compacta h, ¢e, fq, raui h, fulvipes h, robertsonii h; Vesp.: 
Polistes variatus h; Eumen.: Eumenes fraternus h, ¢, t, Leionotus 
anormis h, t, ab, arvensis h, fq, foraminatus h; Crabron.; Ana- 
erabo ¢, p, Protothyreopus rufifemur h, p, fq; Larr. (h): Astatus 
unicolor, Tachytes distinctus, elongatus, mandibularis, pepticus 
fq; Pompil. (h): Anoplius illinoensis, Batizonus, Lophopompilus 
philadelphicus, Priocnemoides fulvicornis, terminatus; J'enthre- 
din.: Hylotoma humeralis h. : 

Diptera (16)—Syrph.: Eristalis latifrons h, Syritta ¢, Tropidia 
quadrata h; Mida.: Midas clavatus h; Conop.: Physocephala texana 
h, tibialis h; Tachin.: Archytas analis h, Clytiomyia h, t, Linnae- 
myia h, t, Ocyptera tenuis h, t, Spallanzania h, ¢, p, t, Xanthomel- 
ana t, n, Senotainia trilineata t, fq, n; Musc.: Compsomyia e, t, 
Phormia regina c, Pseudopyrellia h, ¢, t. 

Lepidoptera (3, h)—Nymphal.: Anosia; Hesperi.: Pholisora 
hayhurstii, Polites. 

Without pollinia (60) :— 

Long-tongued Bees (1)—Bomb.: Bombus americanorum 9. 

Short-tongued Bees (4)—Halic.: Agapostemon radiatus 9, 
Chloralictus albipennis (', sparsus 9; Sphecodini: Sphecodium 
eressonii ¢. 

Other Hymenoptera (9)—Sphec.: Priononyx atrata, Sceli- 
phron, Sphex nigricans; Scoli.: Elis interrupta; Philanth.: Cerceris 
finitima; Crabron.: Solenius; Ozybel.: Notoglossa frontalis; 
Formici.: Formica rufibarbis; Chrysid.: Holopyga. 

Diptera (29 n)—Syrph.: Allograpta, Eristalis transversus, 
Mesogramma marginata, polita, Orthoneura nitida, Paragus bicolor, 
Sphaerophoria; Empid.: Parempis; Bombyli.: Exoprosopa fasciata, 
Systoechus; Conop.: Conops brachyrrhynchus; Tachin.: Cisto- 
gaster occidua, Exorista confinis, Gymnoprosopa, Ennyomma glo- 
bosa, Paradidyma, Phorantha purpurascens, Senotainia rubri- 
ventris, Siphoplagia anomala, flaccidirostris, Trichopoda pennipes, 
Trichophora; Sarcophag.: Helicobia helicis, Sarcophaga sinuata; 


36 FLOWERS AND INSECTS—XXVI 


Musc.: Graphomyia, Lucilia sylvarum; Anthomy.: Calythea, Lim- 
nophora; Seps.: Sepsis. 

Lepidoptera (13)—Nymphal.: Argynnis, Phyciodes, Vanessa 
atalanta; Lycaen.: Chrysophanus, Everes; Papilion.: Kurymus, 
Heraclides, Pieris; Hespert.: Achalarus, Euphyes verna, Limo- 
chores taumas, Pholisora catullus; Ctenuch.: Scepsis. 

Coleoptera (8 n)—Cerambyc.: Typocerus sinuatus; Rhipiphor.: 
Rhipiphorus limbatus; Scarabae.: Trichius piger. 

Hemiptera (1)—Phymat.: Phymata, pred, n. 


Gonolobus laevis (8:108-10)—Blooms July 12-August 23; 
22 visitors observed, July 14-August 23; Mis, W. 

With pollinia on proboscides (14) :— 

Long-tongued Bees (1)—Hucer.: Epimelissodes atripes 9. 

Short-tongued Bees (4, ¢ ?)—-Chloralictus sparsus ab, tegu- 
laris, versatus ab, zephyrus ab. 

Other Hymenoptera (4)—Sphec.: Ammobia nuda; Scoli.: Elis 
interrupta, 5-cincta fq; Vesp.: Polistes variatus. 

Diptera (5)—Bombylt.: Anthrax fulvohirta; Conop.: Conops 
xanthopareus; Tachin.: Alophora aeneoventris, Panzeria; Musce.: 
Lucilia sericata. 

Without pollinia (8) :— 

Short-tongued Bees (6)—Halict.: Augochlora viridula ¢' 9, 
Chloralictus illinoensis ¢', Paralictus cephalicus 9, platyparius 9; 
Prosopid.: Prosopis illinoensis 9, pygmaea J. 

Other Hymenoptera (1)—Eumen.: Leionotus ziziae. 

Diptera (1)—Empid.: Parempis n. 


BALSAMINACEAE 


Impatiens biflora (2: 300-1)—Blooms June 19-September 20; 
11 visitors observed, July 30-September 12; Ma, R. 

Birds (1)—Trochil.: Trochilus fq. 

Long-tongued Bees (6)—Ap.: Apis se; Bomb.: Bombus ameri- 
canorum ¢ G, impatiens 9%, se; Megachil. (9, ¢, n) : Megachile brevis, 
mendica; Eucer.: Melissodes bimaculata 9. 

Short-tongued Bees (2, 9, ¢, n)—Halict.: Chloralictus versatus, 
Oxystoglossa confusa. 

Lepidoptera (1)—Papilion.: Euphoeades. 

Coleoptera (1)—Chrysomel.: Diabrotica 12-punctata gn, n. 

Impatiens pallida (2: 301-2)—Blooms June 11-September 17; 


6 visitors observed, July 23-September 17; Ma, Y. 
Birds (1)—Trochil.: Trochilus. 


CHARLES ROBERTSON 37 


Long-tongued Bees (4)—-Bomb.: Bombus americanorum ¢ 9, 

ab, impatiens %, se, ab; Megachil.: Megachile brevis 9, ¢, n. 
Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, n. 
Diptera (1)—Syrph.: Rhingia sf, n. 


BERBERIDACEAE 

Caulophyllum thalictroides (9: 154-5).—Blooms April 23- 
May 7; 29 visitors observed, April 23—May 3; Mi, Y. 

Long-tongued Bees (3, 2?)—Bomb.: Bombias separatus, Bombus 
impatiens, ridingsii. 

Short-tongued Bees (8, 9)—Halict.: Augochlora viridula, Chlo- 
ralicus sparsus sec, versatus sc, Curtisapis coriacea, Evylaeus 4-macu- 
latus, Halictus lerouxii, Oxystoglossa confusa, pura. 

Other Hymenoptera (6)—Scelion.: Prosacantha n; Bracon.: 
Bracon trifolii, vernoniae, Dacnusa, Microgaster ab, Opius ruficeps, 

Diptera (9)—Mycetophil.: Dynatosoma thoracicum n, type; 
Syrph.: Chilosia petulea, Melanostoma obscurum, Rhingia; Empid.: 
Rhamphomyia piligeronis; Musc.: Morellia; Anthomy.: Hylemyia 
plumosa, type, Mydaea socialis ; Oscin.: Chlorops assimilis. 

Coleoptera (3)—Anthic.: Corphyra terminalis; Curculion.: Idio- 
stethus subealvus ; Mordell.: Mordellistena biplagiata n. 


Podophyllum peltatum (9: 155-6).—Blooms April 14~-May 21; 
5 species and 8 individuals observed, April 25—-May 14; Ma, W. 
Long-tongued Bees (5)—Ap.: Apis ¢, 1; Bomb. (2): Bombias 
separatus 1, Bombus americanorum 3, impatiens 1; Eucer.: Tetra- 
lonia dilecta 3, 2. 


BIGNONIACEAE 


Tecoma radicans.—Blooms June 8—-September 10; 3 visitors 
observed, July 21, August 6; Ma (O), R. 

Birds (1)—Trochil.: Trochilus ab. 

Long-tongued Bees (1)—Bomb.: Bombus americanorum 9%, ¢, 
ab, n. 

Short-tongued Bees (1)—Halict.: Chloralictus zephyrus 9, ¢, n. 

Extra-floral nectaries—Sixteen visitors observed, July 20, 21. 

Ants (4, $)—Formic.: Formica fusea 13, schaufussi 3, Tapi- 
noma 2; Myrmic.: Cremastogaster ab, day and night. 

Short-tongued Bees (3)—Halict.: Chloralictus sparsus 9, 6, 
versatus 9, 20, zephyrus ¢ Q, 7. 

Diptera (9)—Syrph.: Syritta 1; Sarcophag.: Helicobia helicis 
1, Sarcophaga assidua 1, cimbicis 2; Musc.: Lucilia serieata 1, Musea 
1, Stomoxys 1; Agromyz.: Milichiella 11; Ortal.: Camptoneura fq. 


38 FLOWERS AND INSECTS—XXVI 


BoRANGINACEAE 
Cynoglossum officinale (int).—One visitor observed, June 11; 
Ma, R. 
Long-tongued Bees (1)—Megachil.: Megachile brevis 9. 


Lappula virginiana.—Blooms July 5-September 9, 4 visitors 
observed, July 15, 22, 27; Mi, W. 

Short-tongued Bees (3, 2)—Halict.: Chloralictus sparsus, ver- 
satus, Seladonia. 

Diptera (1)—Syrph.: Syritta fq. 


Lithospermum canescens (8: 144-6).—Blooms March 18—June 
12; 37 visitors observed, April 18—June 5; Ma, Y. 

Long-tongued Bees (17)—Ap.: Apis; Bomb. (2) : Bombias scu- 
tellaris, Bombus americanorum ab, impatiens; Ceratin.: Ceratina 
©; Megachil.: Osmia atriventris J 9, se, fq, illinoensis ¢ 9, se, ab, 
cordata J, distincta 9, se; Nomad.: Gnathias ovatus 2, Heminomada 
3, Holonomada superba 4; Melect.: Bombomlecta ¢ 9, ab; Hucer.: 
Tetralonia belfragei %, dilecta ¢ 9, ab, in cop, illinoensis 3, type; 
Anthophor.: Anthophora J, fq. 

Diptera (2)—Bombylt.: Bombylius atriceps, major fq. 

Lepidoptera (18)—Nymphal.: Anosia fg, Charidryas, Phye- 
iodes, Vanessa atalanta, cardui, huntera; Lycaen.: Chrysophanus; 
Papilion.: Eurymus ab, Iphiclides fq, Papilio, Pieris; Hesperi.: 
Pholisora catullus, Thanaos brizo, icelus fq, juvenalis, martialis, 
persius; Noctu.: Plusia simplex. 


Mertensia virginica (13: 580-1).—Blooms March 31—May 25; 
28 visitors observed, April 8-May 13; Ma, R. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (16)—Ap.: Apis e; Bomb. (2): Bombias 
auricomus, separatus, Bombus americanorum fq, consimilis, rid- 
ingsii; Megachil.: Centrosmia 6 9, sc, fq, Ceratosmia ¢' 9, Osmia 
atriventris ¢ 9, se, pumila 2, se; Nomad.: Xanthidium dentariae ¢'; 
Eucer.: Tetralonia belfragei ¢ 9, se, fq, dilecta ¢ 9, fq, in cop, 
dubitata 4, fq; Anthophor.: Anthemoessa ¢' 9, Anthophora ¢ 9, fq. 

Short-tongued Bees (2, 9, n)—Halict.: Chloralictus versatus, 
Oxystoglossa confusa. 

Diptera (3)—Syrph.: Rhingia sf, Teuchoenemis f, n; Bombyli.: 
Bombylius major. 

Lepidoptera (6)—Nymphal.: Anosia, Vanessa atalanta; 
Papilion.: Euphoeades; Hesperi.: Thanaos juvenalis; Sphing.: 
Deilephila, Hemaris thysbe. 


CHARLES ROBERTSON 39 


Myosotis virginica.—Blooms April 27—June 9; 2 visitors ob- 
served, May 21, 24; Mi, W. 

Short-tongued Bees (1)—Halict.: Oxystoglossa confusa 9. 

Lepidoptera (1)—Papilion.: Pontia. 


CAMPANULACEAE 

Campanula americana (4:70).—Blooms July 1—October 6; 20 
visitors observed, July 10—October 4; Ma, R. 

Long-tongued Bees (9)—Ap.: Apis; Bomb.: Bombias separatus 
do, Bombus americanorum ¢ 9%, fq, impatiens ¢ %; Megachil.: 
Megachilini: Megachile brevis ¢ 2, petulans 9, e, Oligotropus cam- 
panulae ¢ 9, se, oligolege, type; Coelioxyini: Coelioxys modesta 2; 
Eucer.: Melissodes bimaculata ¢ 9. 

Short-tongued Bees (7)—Halict.: Agapostemon radiatus ¢ 9, 
Chloralictus sparsus 9, ¢, n, Curtisapis coriacea ¢ 92, Halictus 
lerouxii ¢, Oxystoglossa confusa 9, ce, n; Prosopid.: Prosopis ziziae 
Q, f, n; Collet.: Colletes latitarsis 9, n. 

Other Hymenoptera (1)—WScoli.: Elis 5-cincta. 

Diptera (1)—Syrph.: Pipiza nigribarba f, n. 

Lepidoptera (2)—Nymphal.: Vanessa cardui; Hesperi.: Pholi- 
sora hayhurstii. 


Specularia perfoliata—Blooms May 18—June 29; 17 visitors 
observed, May 29—June 29; Mi, R. 

Long-tongued Bees (3, 2)—Bomb.: Bombias separatus, Bombus 
americanorum ; Ceratin.: Ceratina. 

Short-tongued Bees (6)—Halict. (2): Augochlora fervida, 
Chloralictus versatus sc, Oxystoglossa confusa, similis se, fq, Sela- 
donia ; Collet.: Colletes brevicornis ¢ 9, se, ab, oligolege. 

Other Hymenoptera (1)—Ewumen.: Leionotus foraminatus. 

Diptera (4)—Syrph.: Mesogramma marginata f, n; Bombyli.: 
Anthrax sinuosa f, n; Conop.: Oncomyia, Stylogaster biannulata. 

Lepidoptera (3)—Lycaen.: Everes; Papilion.: Pieris; Hesperi.: 
Pholisora hayhurstii. 

CAPRIFOLIACEAE 


Lonicera sempervirens (cult, 10:241).—Ma (0), R. 
Birds (1)—Trochil.: Trochilus ab. 


Lonicera sullivantii (10: 241-4).—Blooms May 15—June 7; 5 
visitors observed, May 17-27; Ma, Y. 

Birds (1)—Trochil.: Trochilus fq. 

Long-tongued Bees (3, 9)—Bomb.: Bombus americanorum, im- 
patiens fq; Anthophor.: Anthophora se, fq. 

Diptera (1)—Syrph.: Pipiza femoralis f, n. 


40 FLOWERS AND INSECTS—XXVI1 


Sambucus canadensis (5: 274-5).—Blooms May 27—August 9; 
32 visitors observed, June 7—-July 11; Pol (Mis), W. All visits are 
for pollen. 

Long-tongued Bees (2, ¢).—Ap.: Apis fq; Ceratin.: Ceratina 9. 

Short-tongued Bees (6, ?, ¢)—Halict.: Chloralictus sparsus ab, 
versatus ab, zephyrus ab, Evylaeus arcuatus, Halictus parallelus; 
Andren.: Trachandrena claytoniae. 

Diptera (19, f)—Syrph.: Allograpta fq, Baccha fuscipennis, 
Eristalis dimidiatus, tenax, Mallota cimbiciformis fq, Mesogramma 
geminata, marginata, Orthoneura nitida ab, Spilomyia hamifera 
fq, Syritta, Syrphus americanus, ribesii fq, Xylota fraudulosa; 
Bombyli.: Anthrax sinuosa, Argyramoeba oedipus; Musc.: Musca, 
Pseudopyrellia; Anthomy.: Phorbia acra, platura. 

Coleoptera (5, £)—Cerambyc.: Euderces; Dermest.: Attagenus 
fq; Malach.: Anthocomus; Mordell.: Pentaria; Scarabae.: Euphoria 
fulgida. 

108 individuals taken on the flowers, July 8-10, 1920, showed: 

Long-tongued Bees (4, ¢)—Apidae. 

Short-tongued Bees (68, 2, ¢)—Halictidae. 

Diptera (32, £)—Syrphidae 31, Anthomyidae 1. 

Coleoptera (4, f). 


Symphoricarpus orbiculatus (16:173-4)—Blooms July 6- 
September 10; 120 visitors observed, July 8-August 30; Mis, Y. 

Long-tongued Bees (10)—Ap.: Apis ab; Bomb.: Bombias sepa- 
ratus 2 %, Bombus americanorum Q, sc, consimilis $, se, impatiens 
2 s, 9 se, fq; Megachil.: Megachilini: Megachile mendica ¢ Q, 
Oligotropus <; Coelioxyini: Coelioxys 8-dentata J, sayi ¢ 9; 
Eucer.: Melissodes bimaculata J. 

Short-tongued Bees (27)—Halict.: Agapostemon radiatus ¢ 9, 
ab, Augochlora fervida 9, viridula ¢ 9, ab, Chloralictus coreopsis 9, 
cressonii ¢ 9, fq, obscurus ¢ 9, ab, sparsus J 9, se, ab, tegularis 
& , fq, versatus 9, sc, ab, zephyrus J 9, ab, Curtisapis coriacea 
3& &, forbesii J 9, Evylaeus foxii 2, pectoralis ¢' ?, fq, 4-macu- 
latus ¢ 9, Halictus lerouxii J 9, ab, parallelus ¢ 9, Odontalictus Q, 
Oxystoglossa confusa ¢ 9, ab, pura ¢ Q, ab, similis ¢ 2, ab, Sela- 
donia ¢ 2; Sphecodini: Sphecodes arvensis ¢ 2, ab, heraclei ¢ 9; 
Prosopid. (8 @): Prosopis sayi, ab, ziziae fq; Collet.: Colletes 
nudus ¢ . 

Other Hymenoptera (48)—Sphec.: Ammobia ichneumonea, 
nuda, pennsylvanica, Isodontia apicalis, macrocephala, Sphex gra- 
cilis, nigricans fq, vulgaris fq; Bembic.: Bicyrtes 4-fasciata, Mega- 
stizus; Scolt.: Elis obscura, 5-cincta fq, Scolia bicineta; Philanth.: 


CHARLES ROBERTSON 41 


Cerceris clypeata fq, compacta, fumipennis, Philanthus punctatus 
fq; Vesp.: Polistes annularis, pallipes, variatus; Ewmen.: Ancistro- 
cerus tigris, Eumenes fraternus ab, Leionotus anormis, arvensis, 
dorsalis, foraminatus ab, fulvipes, histrionalis, illinoensis fq, 
megaera, perennis, 4-sectus, scrophulariae, ziziae, Monobia, Zethus ; 
Oxybel.: Notoglossa frontalis; Larr.: Notogonidea, Tachytes auru- 
lentus; Pompil.: Episyron, Lophopompilus philadelphicus fq, 
Poecilopompilus navus, Priocnemoides unifasciatus, 

Diptera (37)—Culic.: Aédes; Stratiomy.: Nemotelus, Stratio- 
myia meigenii: Syrph.: Eristalis tenax, transversus, Helophilus 
laetus, Mallota cimbiciformis, Mesogramma geminata ab, marginata, 
Milesia, Orthoneura nitida ab, Pipiza nigribarba, Spilomyia longi- 
cornis, Syritta ab, Tropidia albistylum, quadrata; Empid.: Parem- 
pis ab; Bombyli.: Exoprosopa fascipennis; Conop.: Conops xantho- 
pareus, Oncomyia; Tachin.: Archytas analis fq, aterrima, Belvosia 
bifasciata, unifasciata, Cyphocera, Linnaemyia, Ocyptera dosiades, 
tenuis, Phorantha magna, Siphona, Spallanzania, Trichopoda pen- 
nipes, Trichophora, Xanthomelana; Musc.: Compsomyia, Lucilia 
caesar, Pseudopyrellia fq. 

Lepidoptera (1)—Lycaen.: Cyaniris. 

Coleoptera (2)—Mordell.: Mordella marginiata, Mordellistena 
pubescens. 

On seven days, July 13-27, 1909, the following 87 species and 
1,052 individuals were taken on the flowers: 

Long-tongued Bees (6:21)—Ap.: Apis 12; Bomb.: Bombias 
separatus 1, Bombus consimilis 1, impatiens 5; Megachil.: Oligo- 
tropus 1; Eucer.: Melissodes bimaculata 1. 

Short-tongued Bees (25: 781)—Halict.: Agapostemon radiatus 
26, Augochlora fervida 1, viridula 73, Chloralictus coreopsis 1, 
eressonii 7, obscurus 29, sparsus 220, tegularis 6, versatus 69, 
zephyrus 17, Curtisapis forbesii 2, Evylaeus foxii 1, pectoralis 9, 
4-maculatus 3, Halictus lerouxii 15, paralellus 4, Oxystoglossa con- 
fusa 84, pura 22, similis 163, Seladonia 2; Sphecodini: Sphecodes 
arvensis 2, heraclei 1; Prosopid.: Prosopis sayi 16, ziziae 6; Collet.: 
Colletes nudus 2. , 

Other Hymenoptera (30: 104)—Sphec.: Ammobia ichneumonea 
2, pennsylvanica 1, Isodontia apicalis 1, Sphex gracilis 2, nigricans 
4, vulgaris 4; Scoli.: Elis obscura 1, 5-cincta 3, Scolia bicineta 3; 
Philanth.: Cerceris clypeata 5, compacta 2, fumipennis 1, Philan- 
thus punctatus 3; Vesp.: Polistes pallipes 2, variatus 1; Eumen.: 
Ancistrocerus tigris 1, Eumenes fraternus 15, Leionotus arvensis 3, 
foraminatus 31, fulvipes 3, histrionalis 1, perennis 1, 4-sectus 2, 
serophulariae 1, Monobia 2, Zethus 2; Larr.: Notogonidea 1, 


42 FLOWERS AND INSECTS—XXVI 


Tachytes aurulentus 1; Pompil.: Episyron 1, Lophopompilus phila- 
delphicus 4. 

Diptera (24: 141)—Stratiomy.: Nemotelus 1; Syrph.: Eristalis 
tenax 1, transversus 1, Helophilus laetus 1, Mesogramma geminata 
15, marginata 3, Milesia 1, Orthoneura nitida 20, Pipiza nigribarba 
1, Spilomyia longicornis 1, Syritta 10, Tropidia albistylum 1, quad- 
rata 2; Empid.: Parempis 54; Conop.: Oneomyia 1; Tachin.: 
Archytas analis 6, Cyphocera 1, Siphona 1, Spallanzania 1, Tricho- 
poda pennipes 4, Trichophora 2; Musc.: Compsomyia 4, Lucilia 
caesar 4, Pseudopyrellia 5. 

Coleoptera (2:5)—Mordell.: Mordella marginata 4, Mordelli- 
stena pubescens 1. 


Triosteum perfoliatum (4:65)—Blooms May 3-June 17, 7 
visitors observed, May 18, 23, June 3; Ma, R. 

Long-tongued Bees (5)—Bomb. (°): Bombus americanorui, 
consimilis ab, ridingsii; Anthophor.: Anthemoessa ¢; Ceratin.: 
Ceratina 9, n. | 

Short-tongued Bees (2, 9, n)—Halict.: Halictus lerouxii e¢, 
Oxystoglossa confusa se. 


Viburnum prunifolium (10: 237-8).—Blooms April 9—May 16; 
83 visitors observed, April 24, May 8; Mis, W. 

Long-tongued Bees (11)—Ap.: Apis se; Ceratin.: Ceratina J; 
Megachil.: Ceratosmia 9, Osmia pumila 9; Nomad.: Gnathias 
cuneatus 3“, ovatus ¢, Heminomada <1, Nomada eressonii 3, faq, 
illinoensis ', sayi 9, fq; Hucer.: Tetralonia dilecta J 9. 

Short-tongued Bees (27)—Halict. (2): Agapostemon radiatus, 
Chloralictus cressonii, pilosus sec, sparsus se, ab, tegularis se, ver- 
satus se, ab, Evylaeus foxii sc, pectoralis sc, ab, Halictus lerouxii 
se, Oxystoglossa confusa se, fq; Sphecodini: Machaeris stygia, 
Proteraner, Sphecodes arvensis fq, Sphecodium eressonii; Collet.: 
Colletes inaequalis ¢; Andren.: Andrena ecarlini ?, dunningii 9, 
erythrogastra J, pruni ¢ 9, se, fq, in eop, sayi ¢ 9, se, fq, Opan- 
drena eressonii 3 2, se, fq, miserabilis J 9 se, ab, personata ¢ 9, 
ab, Trachandrena claytoniae 9, se, forbesii 9, sc, hippotes Q, se, 
rugosa ¢. 

Other Hymenoptera (2)—Vesp.: Polistes pallipes; Humen.: 
Ancistrocerus tigris. 

Diptera (36)—Stratiomy.: Stratiomyia quaternaria fq; Syrph.: 
Brachyopa, Chilosia capillata fq, petulea, punctulata, Chrysogaster 
ontario, Criorhina decora, umbratilis, Eristalis aeneus fq, dimidia- 
tus, transversus, Helophilus latifrons, Mesogramma geminata, mar- 
ginata, Myiolepta strigilata fq, Orthoneura pictipennis, Paragus 


CHARLES ROBERTSON 43 


bicolor, Psilota, Syritta; Empid.: Empis nuda, otiosa fq, Rham- 
phomyia mutabilis, priapulus, sordida; Bombyli.: Bombylius major, 
pulchellus ; Conop.: Myopa vesiculosa fq, in cop; Tachin.: Archytas 
analis, Gonia capitata, Gymnosoma, Peleteria fq; Musc.: Graph- 
omyia, Lucilia caesar, sericata fq, Phormia regina, Pseudopyrellia. 

Lepidoptera (7)—Nymphal.: Charidryas, Vanessa huntera; 
Lycaen.: Cyaniris, Uranotes; Hesperi.: Thanaos juvenalis fq, mar- 
tialis; Sphing.: Hemaris thysbe. 


Viburnum pubescens (10: 236-7; 16: 171—2).—Blooms May 2- 
25; 71 visitors observed, May 4-20; Mis, W. 

Long-tongued Bees (5)—Bomb.: Bombias separatus 9, Bombus 
americanorum 9; Ceratin.: Ceratina 9, se; Megachil.: Osmia 
pumila 2; Eucer.: Tetralonia dilecta ¢. 

Short-tongued Bees (21)—Halict. (2): Chloralictus eressonii 
se, versatus se, Curtisapis coriacea, se, Evylaeus foxii se, pectoralis 
se, fq, 4-maculatus, Oxystoglossa confusa se; Prosopid.: Prosopis 
illinoensis 9, pygmaea 9, ziziae ¢; Andren.: Andrena earlini 9, se, 
mandibularis 9, se, fq, salictaria 9, sayi 2, se, fq, Opandrena cres- 
sonii ¢ 9, se, ab, personata i, fq, serotina 9, sc, fq, Trachandrena 
claytoniae 9, se, ab, forbesii 2, se, nuda 9, se, rugosa 9, se, fq. 

Diptera (26)—Syrph.: Chilosia capillata, Criorhina decora, 
umbratilis fq, Mesogramma geminata, Syritta, Volucella vesiculosa, 
Xylota chalybea; Empid.: Empis avida, compta, distans fq, 
humilis fq, levicula, nuda, otiosa, Pachymeria fq, Rhamphomyia 
angustipennis, exigua, mutabilis fq, priapulus fq, sordida; Conop.: 
Myopa vesiculosa ; Tachin.: Epigrimyia floridensis, Siphona; Musc.: 
Lucilia caesar; Oscin.: Chlorops proxima, Hippelates plebejus. 

Lepidoptera (2)—Papilion.: Iphiclides; Hesperi.: Thanaos 
juvenalis. 

Coleoptera (17)—Bruch.: Bruchus hibisei; Cerambyc.: Cal- 
limoxys sanguinicollis, Euderces, Molorchus ab; Chrysomel.: Dia- 
brotica vittata, Disonycha; Dermest.: Anthrenus musaeorum fq, 
Cryptorhopalum triste, Orphilus ab; Lampyr.: Telephorus dentiger ; 
Mordell.: Mordellistena aspersa fq, biplagiata fq, grammica; 
Oedemer.: Asclera ruficollis; Scarabae.: Euphoria fulgida, Hoplia 
fq, Valgus gn, n. 

CARYOPHYLLACEAE 

Cerastium nutans.—Blooms April 16—May 31; 16 visitors ob- 
served, May 1-3; Mi, W. 

Long-tongued Bees (1)—Ap.: Apis fq. 

Short-tongued Bees (4, 2)—Halict.: Chloralictus sparsus, ver- 
satus sc, Halictus lerouxii, Seladonia sc, fq. 


44 FLOWERS AND INSECTS—XXVI 


Diptera (9)—Syrph.: Eristalis bastardi, Helophilus latifrons 
fq, similis fq, Melanostoma mellinum, Mesogramma marginata f, 
Sphaerophoria; Bombyli.: Bombylius major; Tachin.: Peleteria; 
Musc.: Lucilia caesar. 

Lepidoptera (2)—Nymphal.: Phyciodes; Papilion.: Eurymus. 


Cerastium vulgatum (int)—Blooms May 6—September 24; 15 
species and 28 individuals observed, May 19, 21, 28, June 5, 11; 
Mi, W. 

Long-tongued Bees (4: 9)—Ap.: Apis 5; Bomb.: Bombus ameri- 
canorum 9, 1; Ceratin.: Ceratina 9, 2; Stelid.: Microstelis 2, 1. 

Short-tongued Bees (4:8, 9)—Halict.: Oxystoglossa similis 5, 
Seladonia 1; Prosopid.: Prosopis pygmaea 1; Andren.: Opandrena 
personata 1. 

Other Hymenoptera (1:1)—KHumen.: Leionotus illinoensis 1. 

Diptera (6:10)—Syrph.: Mesogramma marginata 2, Sphaero- 
phoria 4; Bombyli.: Toxophora 1; Conop.: Zodion fulvifrons 1; 
Tachin.: Cistogaster pallasii 1, Peleteria 1. 


Saponaria officinalis (int)—Blooms June 1—October 7; 2 visi- 
tors observed, August 24; Ma, R. 
Lepidoptera (2)—Papilion.: Euphoeades, Pontia. 


Silene nivea.—Blooms June 10-July 9; 1 visitor observed, June 
6; Mi, W. 
Short-tongued Bees (1)—Halict.: Chloralictus pilosus 9. 


Silene stellata.—Blooms June 18—August 7; 1 visitor observed, 
June 23; Ma, W. 
Long-tongued Bees (1)—-Bomb.: Bombus americanorum 9. 


Stellaria longifolia—Blooms May 7—June 26; 13 species and 31 
individuals observed, May 14, 18, 22, 24; Mi, W. 

Long-tongued Bees (3:3)—Megachil.: Diceratosmia 92, 1; 
Nomad.: Holonomada superba 4, 1; Eucer.: Tetralonia dilecta J, 1. 

Short-tongued Bees (6:17)—Halict. (2): Chloralictus sparsus 
3, versatus se, 1, Oxystoglossa similis 5, Seladonia 5; Prosopid.: 
Prosopis ziziae 4, 2; Andren.: Opandrena personata Q, se, 2. 

Diptera (4: 11)—Mycetophil.: Sciara atrata 2; Syrph.: Heloph- 
ilus laetus 1, Mesogramma marginata 2; Tachin.: Cistogaster 
pallasii 6. 


Stellaria media (int, 6: 267—-8).—Blooms March 16—December 
1; 61 species observed, March 25—May 8 and October 15; Mi, W. 

Long-tongued Bees (6)—Ap.: Apis; Ceratin.: Ceratina ¢; 
Megachil.: Ceratosmia ¢; Nomad.: Gnathias ovatus ¢ 9, Xanthid- 
ium luteoloides 4, luteolum ¢. 


CHARLES ROBERTSON 45 


Short-tongued Bees (19)—Halict.: Chloralictus obseurus 6, 
pilosus 9, sparsus 9, se, ab, versatus ¢ 2, fq, Evylaeus foxii 9, 
4-maculatus ?, Halictus lerouxii 2, Odontalictus ?, Oxystoglossa 
confusa 9, ab, similis 9, Seladonia 9; Collet.: Colletes inaequalis ¢; 
Andren.: Andrena illinoensis ?, sayi 4, Opandrena ecressonii ¢ 9, 
sc, in cop, type, miserabilis ¢ 2, personata ¢ 9, ab, Parandrena dj, 
Trachandrena forbesii 9. 

Other Hymenoptera (4)—Sapyg.: Sapyga; Chalcid.: Smicra 
torvina ; Ichnewmon.: Pimpla novita; Tenthredin.: Dolerus arvensis. 

Diptera (29)—Mycetophil.: Sciara atrata; Syrph.: Brachy- 
palpus frontosus, Chilosia capillata, Eristalis aeneus, dimidiatus, 
tenax, Melanostoma obscurum, Mesogramma geminata, marginata 
fq, Platychirus quadratus, Syritta, Syrphus americanus, ribesii; 
Tachin.: Gonia capitata ab, exul fq, Siphona; Sarcophag: Cynomyia 
fq; Musc.: Lucilia caesar, sericata, sylvarum, Musca, Myospila, 
Phormia terraenovae, Pollenia, Pseudopyrellia; Anthomy.: Phorbia 
acra, platura; Borbor.: Borborus; Scatophag.: Scatophaga. 

Lepidoptera (2)—Nymphal.: Vanessa huntera; Lycaen.: Cyan- 
iris. 

Hemiptera (1)—Lygae.: Lygaeus. 

May 6, 8, 1916, the first 100 individuals, representing 19 species, 
taken on the flowers are as follows: 

Long-tongued Bees (1: 2)—Nomad.: Gnathias ovatus 2. 

Short-tongued Bees (7: 73)—Halict.: Chloralictus sparsus 40, 
versatus 5, Evylaeus 4-maculatus 2, Oxystoglossa similis 2; Andren.: 
Opandrena cressonii 2, miserabilis 1, personata 21. 

Other Hymenoptera (1: 1)—Sapyg.: Sapyga 1. 

Diptera (10: 24)—Syrph.: Mesogramma geminata 2, marginata 
6, Syritta 1; Tachin.: Siphona 3; Musc.: Lucilia caesar 1, sericata 1, 
sylvarum 4, Pollenia 1; Anthomy.: Phorbia acra 4, platura 1. 


CELASTRACEAE 

Celastrus scandens.—Blooms May 21—June 3; 6 species and 15 
individuals observed, May 24; Mi (Mis), Y. 

Long-tongued Bees (1:1)—Megachil.: Hoplitis 9, 1. 

Short-tongued Bees (4: 13)—RHalict.: Augochlora fervida 9, 1, 
Chloralictus versatus 9, sc, 4; Collet.: Colletes aéstivalis ¢ 9, 6; 
Andren.: Opandrena eressonii 9, se, 2. 

Other Hymenoptera (1: 1)—2Humen.: Leionotus foraminatus 1. 


Evonymus atropurpureus (16: 158).—Blooms May 25—June 23; 
22 species and 51 individuals observed, June 7, 8, 11, 15; Mi, R. 

Short-tongued Bees (5:11, 9)—Halict.: Chloralictus sparsus 5, 
versatus 3, zephyrus 1, Oxystoglossa confusa 1, pura 1. 


46 FLOWERS AND INSECTS—XXVI 


Diptera (15: 384)—Syrph.: Allograpta 2, Baccha tarchetius 1, 
Mesogramma marginata 1, Syrphus ribesii 1; Sarcophag.: Boettch- 
eria 4, Helicobia helicis 1, 4-setosa 4, Sarcophaga cimbicis 1, sinuata 
1; Musc.: Myospila 4, Phormia regina 3, Pseudopyrellia 6; 
Anthomy.: Phorbia acra 3, platura 1; Ortal.: Seoptera 1. 

Coleoptera (2: 6)—Chrysomel.: Rhabdopterus 1; Mordell.: Mor- 
dellistena ornata 5. 

COMMELINACEAE 

Tradescantia brevicaulis——Blooms April 29-June 15; 13 visi- 
tors observed, May 8-24; Ma, R. 

Long-tongued Bees (6, ¢c)—Ap.: Apis fq; Bomb.: Bombias sepa- 
ratus 2, Bombus americanorum 9°; Ceratin.: Ceratina 2; Megachil.: 
Megachile brevis 9; Hucer.: Tetralonia dilecta °, fq. 

Short-tongued Bees (7, 9, ¢)—Halict.: Chloralictus tegularis, 
versatus, Evylaeus pectoralis, 4-maculatus, Oxystoglossa similis, 
Seladonia; Andren.: Opandrena cressonii. 


Tradescantia pilosa.—Blooms June 8—-September 27; 3 visitors 
observed, July 1; Ma, R. 

Long-tongued Bees (2, 9, ¢)—Bomb.: Bombus americanorum, 
impatiens. 

Short-tongued Bees (1)—Halict.: Oxystoglossa pura 9, e¢. 


Tradescantia virginiana (5:71)—Blooms May 8—August 11; 
18 visitors observed, June 3-17; Ma, R. 

Long-tongued Bees (7, ¢)—Ap.: Apis; Bomb.: Bombias auri- 
comus 9, separatus 2 %, Bombus americanorum 9, consimilis 9, se, 
impatiens 92; Ceratin.: Ceratina 9; Eucer.: Tetralonia dilecta 9. 

Short-tongued Bees (2, 9, ¢)—Halict.: Agapostemon viridulus, 
Chloralictus pruinosus. 

Diptera (8, f, n)—Syrph.: Allograpta, Eristalis dimidiatus, 
tenax, Mesogramma marginata, Sphaerophoria, Syrphus ameri- 
canus, ribesii, Tropidia mamillata. 

Coleoptera (1)—Curculion.: Centrinites f, n. 


CoMPOSITAE 

Achillea millefolium.—Blooms May 18—August 10; 47 visitors 
observed, May 28-June 28; Mis, W. 

Long-tongued Bees (8, 9)—WMegachil.: Megachile petulans ¢; 
Bomb.: Bombias auricomus c; Nomad.: Gnathias cuneatus. 

Short-tongued Bees (4, 9)—Halict.: Chloralictus pilosus se, ver- 
satus sc, ab, Odontalictus se, Paralictus simplex. 

Other Hymenoptera (8)—Crabron.: Protothyreopus rufifemur ; 
Oxybel.: Notogldssa americana, frontalis, Oxybelus packardii; 


CHARLES ROBERTSON 47 


Philanth.: Cerceris compacta, rufinoda; Eumen.: Leionotus forami- 
natus, fulvipes. 

Diptera (34)—Taban.: Chrysops striatus; Nemestrin.: Rhyn- 
chocephalus; Bombyli.: Oncodocera, Toxophora; Syrph.: Allo- 
grapta, Eristalis aeneus, dimidiatus, tenax, transversus Mallota 
cimbiciformis, Mesogramma marginata, Orthoneura nitida, Paragus 
tibialis, Sphaerophoria, Syritta, Syrphus americanus, ribesii; 
Conop.: Conops brachyrrhynchus, Oncomyia; Tachin.: Apinops, 
Archytas analis, Cistogaster occidua, pallasii, Epigrimyia polita, 
Gymnosoma, Senotainia rubriventris, trilineata; Sarcophag.: Heli- 
cobia helicis, Sarcophaga cimbicis ; Musc.: Lucilia sylvarum, Pseudo- 
pyrellia; Anthomy.: Phorbia acra, platura; Sapromyz.: Sapromyza 
vulgaris. 

Coleoptera (1)—Mordell.: Mordella melaena. 


Actinomeris alternifolia—Blooms August 15—October 4, 12 
visitors observed, August 17—September 12; Mas, Y. 

Long-tongued Bees (6)—Bomb.: Bombias separatus ¢, Bombus 
americanorum 9%, consimilis ¢ ¥, sc, impatiens ¥Y, se; Ap.: Apis se, 
fq; Epeol.: Triepeolus remigatus 9. 

Short-tongued Bees (2)—Halict.: Curtisapis coriacea ; 
Panurg.: Pseudopanurgus labrosiformis 9, c. 

Other Hymenoptera (1)—Scoli.: Seolia bicincta. 

Diptera (1)—Syrph.: Syrphus ribesii. _ 

Lepidoptera (1)—Lycaen.: Cyaniris. 

Coleoptera (1)—Lampyr.: Chauliognathus pennsylvanicus, in 
cop. 


Ambrosia trifida (anemophilous).—Two species and 33 individ- 
uals observed, August 27, September 1. 

Long-tongued Bees (1: 31)—Ap.: Apis ¢, 31. 

Other Hymenoptera (1: 2)—Vesp.: Vespula germanica, expl., 2. 


Antennaria plantaginifolia (15: 462-—3)—Blooms April 4~May 
21; 72 visitors observed, April 14~May 5; Mis, W. 

On staminate flowers (25): 

Long-tongued Bees (3)—Megachil.: Osmia pumila ¢; Bomb.: 
Bombus americanorum 9; Nomad.: Nomada cressonii ¢. 

Short-tongued Bees (2, 9)—Halict.: Evylaeus foxii se ; Spheco- 
dini: Dialonia antennariae type. 

Diptera (14)—Empid.: Empis otiosa type; Syrph.: Eristalis 
aeneus, Mesogramma geminata, Orthoneura nitida, Paragus tibialis, 
Platychirus hyperboreus, quadratus; Tachin.: Pachyophthalmus 
signatus; Sarcophag.: Cynomyia, Helicobia helicis, Sarcophaga 


48 FLOWERS AND INSECTS—XXVI 


cimbicis; Musc.: Morellia; Anthomy.: Limnophora; Oscin.: Chlor- 
ops versicolor. 

Lepidoptera (4)—Nymphal.: Vanessa huntera; Hesperi.: 
Thanaos juvenalis; Noctu.: Drasteria erechtea ; Pyraust.: Loxostege. 

Coleoptera (2, £)—Dermest.: Anthrenus scrophulariae; Oede- 
mer.: Asclera ruficollis. 

On staminate and pistillate flowers (26) :— 

Long-tongued Bees (5)—Ceratin.: Ceratina 0, ab, Zaodonto- 

merus 6; Ap.: Apis; Nomad. (¢ 9, fq) : Gnathias ovatus, Nomada 
sayl. : 
Short-tongued Bees (12)—Halict. (2): Chloralictus pilosus se, 
sparsus se, ab, versatus se, ab, zephyrus, Halictus lerouxii ab, Odon- 
talictus sc, ab, Oxystoglossa confusa fq, similis se, fq, Seladonia se, 
ab; Sphecodini: Sphecodes minor; Andren.: Parandrena 9, Trach- 
andrena claytoniae ¢. 

Diptera (7)—EHmpid.: Rhamphomyia priapulus; Syrph.: Meso- 
gramma marginata in cop, fq, Sphaerophoria fq; Tachin.: Gonia 
ecapitata ab; Musc.: Lucilia caesar, Pseudopyrellia; Anthomy.: 
Phorbia platura. 

Lepidoptera (2)—Lycaen.: Cyaniris; Papilion.: EKurymus. 

On pistillate flowers (21) :— 

Long-tongued Bees (3)—Nomad.: Heminomada ., Phor ¢, 
Xanthidium luteolum 9. 

Short-tongued Bees (11)—Halict. (2): Chloralictus pruinosus, 
Evylaeus arcuatus, pectoralis; Sphecodini: Sphecodium cressonii ; 
Andren.: Andrena erythrogastra J, illinoensis ¢ 9, fq, nigrae 9, 
salictaria 4, ab, sayi 9, Opandrena miserabilis 3, Trachandrena 
forbesii ¢. 

Other Hymenoptera (1)—Chrysid.: Holochrysis hilaris. 

Diptera (5)—Bombyli.: Bombylius major; Syrph.: Paragus 
bicolor ; Tachin.: Euphorocera claripennis, Gonia exul; Anthomy.: 
Phorbia acra. 

Lepidoptera (1)—Hesperi.: Thanaos brizo. 


Anthemis cotula (int).—Blooms May 17—October 24; 7 visitors 
observed, June 21, 22; Mis, W. 

Short-tongued Bees (5)—Halict.: Chloralictus sparsus 9, se; 
Halictus lerouxii 9, Odontalictus 9, sc, fq, Oxystoglossa similis 9, 
se, Seladonia ¢ 9. 

Diptera (2)—Empid.: Parempis; Conop.: Oncomyia. 


Arctium minus (int)—Blooms July 7—October 24; 19 species 
and 44 individuals observed, July 21-September 8; Mas, R. 


CHARLES ROBERTSON 49 


Long-tongued Bees (9:26)—Megachil.: Anthemois 9, se, 1, 
Sayapis sayi ¢ 9, se, 3; Ceratin.: Ceratina 9, se, 2; Bomb. (9): 
Bombus americanorum sc, 4, consimilis 1, impatiens se, 2; Ap.: Apis 
7; Eucer.: Melissodes bimaculata ¢ 2, 3, vernoniana d, 3. 

Short-tongued Bees (4:11)—Halict.: Agapostemon radiatus 
3 2, 5, Chloralictus sparsus 92, ¢, n, Halictus lerouxii ¢ 2, 2, Odonta- 
lictus 9, 2. 

Diptera (2:2)—Bombyli.: Exoprosopa fasciata, 1; Syrph.: 
Eristalis tenax 1. 

Lepidoptera (4:5)—Papilion.: Eurymus 1, Pieris 2; Hesperi.: 
Hesperia 1, Limochores taumas 1. 


Aster anomalus.—Blooms August 22—November 8; 34 visitors 
observed, August 22—October 9; Mas, R. ; 

Long-tongued Bees (10)—Megachil.: Megachile brevis Q, se, 
Xanthosarus 9, se; Ceratin.: Ceratina 2, se; Bomb.: Bombus ameri- 
eanorum ¢ 9, fq, impatiens ¢ 9, Psithyrus variabilis ¢; Ap.: 
Apis se; Eucer.: Melissodes autumnalis ¢ 9, se, simillima Q, se, 
trinodis Q, se. 

Short-tongued Bees (8)—WHalict.: Chloralictus pilosus ¢, Evy- 
laeus pectoralis 2, sc, Odontalictus ¢ 2, se, Oxystoglossa pura 9; 
Collet. (2, sc): Colletes americanus, compactus; Andren. (9, se): 
Pterandrena asteris solidaginis. 

Other Hymenoptera (1)—Bracon.: Chelonus. 

Diptera (8)—Bombyli.: Anthrax halcyon, Geron rufipes, Spar- 
nopolius ; Empid.: Parempis ; Syrph.: Eristalis transversus, Syrphus 
areuatus; Tachin.: Siphoplagia anomala; Musc.: Compsomyia. 

Lepidoptera (5)—Nymphal.: Phyciodes; Papilion.: Callidryas, 
Pieris, Pontia, Zerene. 

Coleoptera (1)—Melo.: Epicauta pennsylvanica, n. 

Hemiptera (1)—Lygae: Lygaeus. 

October 6, 1909, 22 species and 66 individuals were taken on 
the flowers, as follows: 

Long-tongued Bees (7:43)—Megachil.: Megachile brevis 1; 
Xanthosarus 9; Bomb.: Bombus americanorum 10; impatiens 5; 
Ap.: Apis 8; Eucer.: Melissodes autumnalis 9; trinodis 1. 

Short-tongued Bees (6: 12)—Halict.: Odontalictus 1; Oxystog- 
lossa pura 1; Collet.: Colletes americanus 2; compactus 6; Andren.: 
Pterandrena asteris 1; solidaginis 1. 

Other Hymenoptera (1:1)—Bracon.: Chelonus 1. 

Diptera (4:5)—Bombyli.: Sparnopolius 2; Empid.: Parempis 
1; Syrph.: Syrphus areuatus 1; Musc.: Compsomyia 1. 

Lepidoptera 2: 3)—Papilion.: Pieris 1; Pontia 2. 


50 FLOWERS -AND INSECTS—XXVI 


Coleoptera (1:1)—Melo.: Epicauta pennsylvanica 1. 
Hemiptera (1:1)—Lygae.: Lygaeus 1. 


Aster ericoides villosus (16: 175-6).—Blooms August 30—No- 
vember 8; 302 visitors observed, August 30-November 8; Mis, W. 

Long-tongued Bees (37)—Stelid.: Stelidium 9; Megachil.: Try- 
petini: Neotrypetes productus ¢, truncatus 9, sc; Megachilini: 
Megachile brevis 9, se, generosa 9, mendica 9; Sayapis sayi 9, se, 
Xanthosarus 3 2, sc; Coelioxyini: Coelioxys 8-dentata ¢ 9, fa, 
rufitarsis 9, sayi 9; Ceratin.: Ceratina ¢ 9, fq, Zaodontomerus J, 
fq; Bomb.: Bombias auricomus ¢ 9, scutellaris J 2 %, separatus 
3 %, Bombus americanorum ¢ 2 9, fq, impatiens ¢ Q, se, fa, 
Psithyrus variabilis ¢', fq; Ap.: Apis se, fq; Nomad.: Holonomada 
placida ¢' 9, fq, vincta 9, Nomada vicina ¢ 9, fq; Epeol.: Epeolus 
autumnalis ¢ 9, bifasciatus 2, pusillus ¢' 2, fq, Triepeolus concolor 
2, eressonii ¢' 9, donatus ¢' 2, fq, micropygius 2, type, pectoralis 
3 2, fa, type; Eucer.: Epimelissodes obliqua ¢, Melissodes asteris 
Q, type, autumnalis ¢ , se, ab, type, boltoniae 2, sc, nivea 9, se, fq, 
simillima ¢ 9, se, fq. 

Short-tongued Bees (53)—Halict.: Agapostemon radiatus ¢ 9, 
fq, splendens ¢ 9, texanus J 9, se, viridulus ¢ 9, se, fq, Augochlora 
fervida ¢ 9, se, viridula ¢ 9, Chloralictus coreopsis ¢' 2, foveolatus 
3, type, illinoensis ¢ 9, se, fq, obseurus J, fq, pilosus ¢ 9, fq, prui- 
nosus 4, smilacinae <j sparsus ¢ 9, se, tegularis 4) 9, versatus 
3 @, se, ab, zephyrus ¢ 2, fq, Curtisapis coriacea J, forbesii ¢ 9, se, 
fuscipennis 6', fq, Dialictus ¢ 9, fq, Evylaeus arcuatus 9, foxii 
9, pectoralis J 9, se, fq, 4-maculatus 9, Halictus lerouxii 9, se, 
parallelus ¢', Odontalictus ¢ 9, se, ab, in cop, Oxystoglossa confusa 
3 , sc, ab, pura ¢ 9, similis ¢ 9, fq, Paralictus platyparius 9, 
Seladonia ¢' 9; Sphecodini: Dialonia ?, Machaeris stygia ¢' 2, Pro- 
teraner ¢' 9, Sphecodium ecressonii ¢ ?, fq; Prosopid.: Prosopis 
illinoensis 2, pygmaea 9; Collet. (¢ 9, sc) : Colletes americanus fq, 
armatus, compactus, fq, eulophi; Andren.: Andrena nubecula ¢ 9, 
se, fq, Pterandrena asteris ¢ 9, se, fq, in cop, pulchella 9, solidaginis. 
3 &, se, fq; Panurg.: Calliopsis andreniformis 9, sc, Heterosarus 
©, se, Perdita 9, se, Pseudopanureus albitarsis 4, asteris ¢ 9, se, 
ab, in cop., type, compositarum ¢' 9, se, ab, in cop. 

Other Hymenoptera (54)—Crabron.: Hypoecrabro, Protothyreo- 
pus rufifemur, Solenius; Philanth.: Cerceris astarte, bicornuta, ely- 
peata, fulvipes, Philanthus punctatus, ventilabris; Pemphredon.: 
Mimesa; Sphec.: Ammobia ichneumonea, Priononyx -atrata, fq, 
Sphex gracilis in cop, nigricans, pictipennis, procera, vulgaris; 
Larr.: Larropsis, Notogonidea, Tachytes obscurus; Bembic.: Bi- 


= —— 


CHARLES ROBERTSON 51 


cyrtes ventralis, Stizus; Pompil.: Anoplius illinoensis, Ceropales 
fraterna, Lophopompilus philadelphicus, Planiceps feralis; Vesp.: 
Polistes annularis, pallipes, variatus, Vespula cuneata, germanica 
fq, maculata; Eumen.: Ancistrocerus capra, campestris, tigris fq, 
Eumenes fraternus, Leionotus anormis fq, arvensis, clypeatus, dor- 
salis, foraminatus, fulvipes, fundatus, histrionalis, Zendalia zen- 
daloides ; Scoli.: Elis interrupta, 5-cincta, Scolia bicincta ; Chrysid.: 
Gonochrysis; Chalcid.: Chalcis; Ichneumon.: Exetastes obscurus, 
Metopius polycinctorius; Bracon.: Agathis vulgaris, Chelonus. 

Diptera (119)—Tipul.: Geranomyia; Bibion.: Dilophus sero- 
tinus; Bombyli.: Anthrax alternata fq, hypomelas, Argyramoeba 
albofasciata f, n, Exoprosopa decora, fasciata, fascipennis, Geron 
rufipes fq, Sparnopolius fq, Systropus fq, Toxophora; Empid.: 
Parempis; Syrph.: Allograpta fq, Baccha clavata fq, Chilosia pune- 
tulata, Eristalis aeneus, bastardi, dimidiatus fq, flavipes, latifrons, 
tenax fq, transversus, Helophilus latifrons, similis fq, in cop, Meso- 
gramma geminata, marginata ab, Milesia, Orthoneura nitida, Para- 
gus bicolor, tibialis, Pipiza nigribara, pulchella, Platychirus quad- 
ratus, Sphaerophoria fq, in cop, Spilomyia longicornis fq, 4-fasciata, 
Syritta fq, Syrphus americanus fq, ribesii fq, Tropidia albistylum, 
mamillata, Xanthogramma emarginata; Conop.: Conops xantho- 
pareus, Oncomyia fq, Physocephala texana, tibialis, Robertson- 
omyia in cop, Stylogaster biannulata, Zodion fulvifrons fq, nanel- 
lum fq; Tachin.: Actia, Alophora aeneoventris fq, pulverea, Api- 
nops, Archytas analis fq, aterrima, Belvosia bifasciata, unifasciata, 
Celatoria, Chaetogaedia crebra, Cistogaster occidua fq, Clytiomyia, 
Distichona varia fq, Epigrimyia floridensis, Euphorocera clari- 
pennis, Euthera, Gymnoséma, Hypostena barbata, Leucostoma atra, 
neomexicana, nigricornis, Linnaemyia fq, Macquartia, Ennyomma 
globosa, Ocyptera lata, tenuis, Paradidyma, Peleteria fq, Phorantha 
asteris, magna, pruinosa, purpurascens, Senotainia rubriventris, 
trilineata, Siphona fq, Siphoplagia anomala, flaccidirostris, Spallan- 
zania fq, Sturmia phyciodis, Trichopoda pennipes, Trichophora, 
Winthemia, Xanthomelana; Dezi.: Ptilodexia; Sarcophag.: Cyn- 
omyia, Helicobia helicis, 4-setosa, Sarecophaga assidua, cimbicis, 
hunteri; Musc.: Compsomyia fq, Graphomyia, Lucilia caesar, seri- 
cata fq, Musea, Myospila, Pseudopyrellia fq, Stomoxys fq; An- 
thomy.: Calythea, Coenosia antennalis, antica, 6-notata, Hylaemyia 
laevis, Limnophora, Phorbia acra fq, platura; Ortal.: Chactopsis; 
Trypet.: Trypeta humilis. 

Lepidoptera (30)—Nymphal.: Anosia, Charidryas, Euptoieta, 
Hypatus, Junonia, Phyciodes fq, Vanessa cardui, huntera; Lycaen.: 


52 FLOWERS AND INSECTS—XXVI 


Chrysophanus, Everes, Uranotes; Papilion.: Callidryas, Eurema, 
Eurymus fq, Nathalis, Pieris, Pontia fg, Xanthidia, Zerene; 
Hesperi.: Atalopedes fq, Epargyreus, Hesperia fq, Limochores 
taumas, Polites; Ctenuch.: Scepsis fq; Noctu.: Drasteria erechtea, 
erichto, Feltia, Heliothis armiger, Plusia simplex. 

Coleoptera (6)—Cerambyc.: Cyllene robiniae f, n; Chrysomel. 
(f, n): Diabrotica 12-punctata, longicornis, vittata; Lampyr.: 
Chauliognathus pennsylvanicus fq; Melo.: Epicauta pennsylva- 
nica f, n. 

Hemiptera (3)—Caps.: Lygus; Lygae.: Lygaeus fq; Beryt.: 
Harmostes. 

September 28—November 6, 1909, the following 125 species and 
1,129 individuals were taken on the flowers: 

Long-tongued Bees (16:168)—Megachil.: Megachile brevis 2, 
Sayapis sayi 1, Xanthosarus 2; Ceratin.: Ceratina 10; Bomb.: 
Bombias auricomus 1, scutellaris 1, separatus 2, Bombus ameri- 
canorum 33, impatiens 32, Psithyrus variabilis 12; Ap.: Apis 52; 
Epeol.: Triepeolus donatus 1; Eucer.: Melissodes autumnalis 9, 
boltoniae 3, nivea 3, simillima 4. 

Short-tongued Bees (25: 385)—Halict.: Agapostemon radiatus 
3, texanus 1, Chloralictus coreopsis 3, illinoensis 15, obscurus 6, 
pilosus 3, sparsus 65, tegularis 1, versatus 166, zephyrus 5, Cur- 
tisapis fuscipennis 12, Evylaeus pectoralis 5, Odontalictus 18, 
Oxystoglossa confusa 13, pura 4, similis 13, Paralictus platyparius 
8; Sphecodini: Machaeris stygia 3; Collet.: Colletes americanus 18, 
compactus 1, eulophi 1; Andren.: Andrena nubecula 1, Pterandrena 
pulchella 1, solidaginis 4; Panurg.: Pseudopanurgus composi- 
tarum 15. 

Other Hymenoptera (13: 29)—Philanth.: Philanthus punctatus 
1; Sphec.: Ammobia ichneumonea 1; Vesp.: Polistes annularis 5; 
pallipes 3, variatus 4, Vespula germanica 1, maculata 5; Humen.: 
Ancistrocerus capra 2, tigris 1, Leionotus anormis 2, arvensis 1, 
clypeatus 2, foraminatus 1. 

Diptera (53: 382)—Bibion.: Dilophus serotinus 4; Bombyli.: 
Sparnopolius 33; Syrph.: Allograpta 3, Eristalis latifrons 1, tenax 
3, transversus 1, Helophilus similis 2, Mesogramma geminata 3, 
marginata 74, Sphaerophoria 14, Spilomyia longicornis 4, 4-fasciata 
2, Syritta 10, Syrphus americanus 3; Conop.: Oncomyia 3, Zodion 
fulvifrons 1, nanellum 3; Tachin.: Alophora aeneoventris 2, pul- 
verea 1, Archytas analis 10, aterrima 2, Belvosia unifasciata 1, 
Celatoria 1, Chaetogaedia crebra 1, Cistogaster occidua 7, Distichona 
varia 5, Euphorocera claripennis 2, Gymnosoma 3, Leucostoma atra 


CHARLES ROBERTSON 53 


1, Linnaemyia 6, Paradidyma 4, Peleteria 2, Phorantha asteris 1, 
purpurascens 2, Senotainia rubriventris 1, Siphoplagia anomala 1, 
Spallanzania 5, Sturmia phyciodis 2, Winthemia 1; Sarcophag.: 
Cynomyia 3, Helicobia helicis 4, 4-setosa 2, Sarcophaga assidua 3, 
cimbicis 6; Musc.: Compsomyia 6, Lucilia caesar 8, sericata 23, 
Musca 4, Myospila 1, Pseudopyrellia 73, Stomoxys 6; Anthomy.: 
Phorbia acra 12, platura 6. 

Lepidoptera (13: 88)—-Nymphal.: Phyciodes 15, Vanessa cardui 
1, huntera 2; Lycaen.: Everes 1; Papilion.: Eurymus 31, Pontia 1; 
Hesperi.: Atalopedes 22, Hesperia 3, Limochores taumas 1, Poltes 
3; Ctenuch.: Scepsis 6; Noctu.: Drasteria erechtea 1, Plusia 
simplex 1. 

Coleoptera (5:77)—Chrysomel.: Diabrotica 12-punctata 34, 
longicornis 5, vittata 3; Lampyr.: Chauliognathus pennsylvanicus 
18; Melo.: Epicauta pennsylvanica 17. 


Aster lateriflorus——Blooms September 17—October 30; 57 visi- 
tors observed, September 17—October 15; Mis, W. 

Long-tongued Bees (9)—Megachil.: Megachile mendica 9, se, 
Xanthosarus 9, se; Ceratin.: Ceratina 9, se, Zaodontomerus 0; 
Bomb. (¢ 9): Bombus americanorum sec, consimilis, impatiens se, 
ab; Ap.: Apis se, fq; Eucer.: Melissodes simillima Q, se. 

Short-tongued Bees (15)—Halict.: Agapostemon viridulus 9, 
se, Augochlora viridula ¢ 9, Chloralictus versatus ¢, Curtisapis 
coriacea ¢ 9, fuscipennis ¢', Oxystoglossa confusa 9, pura 9, similis 
2, Paralictus platyparius ¢; Collet.: Colletes americanus 9, se, 
compactus ¢ 9, sc, ab; Andren.: Andrena nubecula 9, sec, Pteran- 
drena solidaginis 2; Panurg.: Pseudopanurgus asteris 9, sc, com- 
positarum ¢ 9, se. 

Other Hymenoptera (14)—Crabon.: Synothyreopus; Sphec.: 
Sphex procera; Vesp.: Polistes annularis, ab, pallipes, fq, Vespula 
germanica, maculata; Humen.: Ancistrocerus capra, campestris, 
tigris, Eumenes fraternus, Leionotus anormis, foraminatus, scrophu- 
lariae, Symmorphus debilis. 

Diptera (17)—Syrph.: Baccha fuscipennis, Eristalis transver- 
sus, Helophilus similis, Sericomyia, Spilomyia longicornis, 4-fas- 
ciata, Syrphus americanus, torvus, Xanthogramma emarginata; 
Tachin.: Archytas analis, aterrima, fq, Cistogaster occidua, Cypho- 
cera, Leskiomima prima, Trichophora; Musc.: Lucilia caesar, ab, 
Pseudopyrellia. 

Lepidoptera (2)—Nymphal.: Basilarchia astyanax; Ctenuch.: 
Scepsis. 

September 28—October 11, the following 37 species and 172 in- 
dividuals were taken as they came to the flowers: 


54 FLOWERS AND INSECTS—XXVI 


Long-tongued Bees (6: 25)—Megachil.: Megachile mendica 2, 
Xanthosarus 2; Ceratin.: Ceratina 3; Bomb.: Bombus american- 
orum 3, consimilis 1, impatiens 14. 

Short-tongued Bees (11:387)—Halict.: Agapostemon viridulus 
1, Augochlora viridula 5, Chloralictus versatus 1, Curtisapis 
coriacea 1, fuscipennis 1, Oxystoglossa confusa 2, pura 1, similis 5; 
Collet.: Colletes americanus 1, compactus 18; Panurg.: Pseudo- 
panuregus asteris 1. 

Other Hymenoptera (8: 50)—Sphec.: Sphex procera 1; Vesp.: 
Polistes annularis 18, pallipes 10, Vespula maculata 2; Ewmen.: 
Ancistrocerus capra 7, tigris 4, Eumenes fraternus 6, Leionotus 
foraminatus 2. 

Diptera (10:57)—Syrph.: Eristalis transversus 1, Helophilus 
similis 3, Syrphus torvus 1; Tachin.: Archytas analis 1, aterrima 10, 
Cistogaster occidua 1, Cyphocera 1, Trichophora 1; Musc.: Lucilia 
caesar 36, Pseudopyrellia 2. 

Lepidoptera (2:3)—Nymphal.: Basilarchia astyanax 1; 
Ctenuch.: Scepsis 2. 


Aster multiflorus——Blooms September 9—October 22; 43 species 
and 124 individuals taken on October 6, 15, 17; Mis, W. 

Long-tongued Bees (5:33)—Ap.: Apis 4; Bomb.: Bombus 
americanorum ¢ 9, 6, impatiens ¢ ?, 17, Psithyrus variabilis ¢, 2; 
Eucer.: Melissodes simillima 9, se, 4. 

Short-tongued Bees (8: 44)—Halict.: Chloralictus illinoensis 9, 
se, 1, obscurus 9, se, 1, pilosus 9, 1, versatus ¢ 9, se, 33, Paralictus 
platyparius 2, 1; Collet.: Colletes americanus ¢ 9, se, 5, compactus 
9, 1; Panurg.: Pseudopanurgus compositarum Q, se, 1. 

Other Hymenoptera (11: 17)—Sphec.: Sphex gracilis 1, procera 
1; Vesp.: Polistes annularis 3, variatus' 4, Vespula maculata 1; 
Eumen.: Ancistrocerus eatskillensis 2, Leionotus anormis 1, elypea- 
tus 1; Crabron.: Solenius 1; Pompil.: Anoplius illinoensis 1, Lopho- 
pompilus philadelphicus 1. 

Diptera (13: 21)—Bombyli.: Sparnopolius 2; Syrph.: Eristalis 
tenax 2, Mesogramma geminata 1, marginata 3, Paragus tibialis 2, 
Sphaerophoria 4, Syritta 1, Syrphus americanus 1; Tachin.: 
Archytas aterrima 1, Spallanzania 1; Sarcophag.: Helicobia helicis 
1; Anthomy.: Coenosia antica 1, Limnophora 1. 

Lepidoptera (2: 2)—Papilion.: Nathalis 1, Pieris 1. 

Coleoptera (1:4)—Chrysomel.: Diabrotica 12-punctata 4. 

Hemiptera (3:3)—Core.: Alydus eurinus 1, pilosulus 1; 
Reduvi.: Sinea 1. 


CHARLES ROBERTSON 55 


Aster novaeangliae (15:459)—Blooms July 24—-November 4; 
41 visitors observed, July 24-October 10; Mas, R. 

Long-tongued Bees (13)—Megachil.: Megachile brevis 9, se, fq, 
Xanthosarus ¢ 2, se, fq; Ceratin.: Ceratina 9, se; Bomb.: Bombias 
seutellaris 4, separatus ¢, Bombus americanorum ¢ 9 9, se, fq, 
impatiens ¢; Ap.: Apis se; Eucer. (2): Melissodes agilis se, au- 
tumnalis sec, boltoniae sc, nivea, simillima se. 

Short-tongued Bees (7)—Halict.: Chloralictus coreopsis 2, ¢, n, 
Halictus parallelus 4, Odontalictus ¢; Collet.: Colletes americanus 
9, e, n; Andren.: Pterandrena helianthi 9°, ¢, solidaginis 9, ¢, n; 
Panurg.: Pseudopanurgus compositarum 9, ¢, n. 

Diptera (11)—Bombyli.: Exoprosopa fascipennis, Sparnopolius, 
Systoechus; Syrph.: Eristalis dimidiatus, latifrons, tenax sf, trans- 
versus, Helophilus similis, Syrphus americanus f, n, Tropidia 
mamillata f, n; Conop.: Stylogaster biannulata fq. 

Lepidoptera (10)—Nymphal.: Anosia, Phyciodes, Vanessa car- 
dui; Papilion.: Eurymus fq, Pontia, Zerene; Hesperi: Hylephila, 
Polites; Noctu.: Heliothis armiger, Plusia simplex. 


Aster paniculatus (15:460)—Blooms September 20—October 
17; Mis, W. The following 101 species and 229 individuals were 
taken as they came. 

Long-tongued Bees (10:25)—Ap.: Apis 10; Bomb.: Bombus 
americanorum 9%, 1, impatiens ¢, 6; Ceratin.: Ceratina gy, 1; 
Megachil.: Trypetini: Neotrypetes truncatus 9, 1; Megachilini: 
Megachile brevis ¢ 9, se, 2, Xanthosarus 9, 1; Coelioxyini: Coelioxys 
8-dentata 2, 1; Eucer.: Melissodes boltoniae 9, se, 1, similima Q, 
se, 1. 

Short-tongued Bees (20: 62)—Halict.: Agapostemon radiatus ¢, 
2, Chloralictus sparsus 9, se, 10, versatus ¢ 9, se, 2, zephyrus 9, 1, 
Curtisapis coriacea ¢, 4, forbesii ¢, 1, Evylaeus pectoralis 2, 1, 
Halictus lerouxii 9, 1, Odontalictus ¢ 9, se, 22, Oxystoglossa con- 
fusa 9, 2, similis 9, 1, Seladonia 2, 2; Sphecodini: Proteraner ¢, 1; 
Prosopid.: Prosopis pygmaea 9, 1; Collet.: Colletes americanus Q, 1, 
compactus 9, sc, 2; Andren.: Andrena nubecula 9, 2, Pterandrena 
asteris ¢ 9, se, 3, type, solidaginis 92, se, 1; Panurg.: Pseudopanur- 
gus compositarum Q, se, 1. 

Other Hymenoptera (27:51)—Philanth.: Cerceris prominens 
1, Eucerceris 1, Philanthus politus 1, punctatus 1; Sphec.: Isodontia 
apicalis 2, Sphex gracilis 1, nigricans 1, procera 3, vulgaris 2; 
Larr.: Notogonidea 1; Pompil.: Episyron 1; Vesp.: Polistes pallipes 
3, rubiginosus 13, variatus 2, Vespula germanica 1, maculata 2; 
Eumen.: Ancistrocerus capra 1, catskillensis 1, tigris 1, Eumenes 


56 FLOWERS AND INSECTS—XXVI 


fraternus 2, Leionotus anormis 2, arvensis 1, foraminatus 2, serophu- 
lariae 1; Scoli.: Elis 5-cineta 1; Ichnewmon.: Lampronota varia 1; 
Bracon.: Bracon longicauda 1. 

Diptera (28:67)—Syrph.: Eristalis aeneus 1, dimidiatus 1, 
tenax 4, transversus 4, Mesogramma geminata sf, 1, marginata 2, 
Sphaerophoria 1, Spilomyia 4-fasciata 1, Syritta 10, Syrphus 
americanus 1, ribesii f, 4; Conop.: Oncomyia 1; Tachin.: Alophora 
aeneoventris 1, Archytas aterrima 3, Linnaemyia 1, Senotainia 
trilineata 1, Spallanzania 1, Trichopoda pennipes 1; Dewi: Ptilo- 
dexia 1; Sarcophag.: Sarcophaga cimbicis 1; Musc.: Compsomyia 
5, Graphomyia 3, Lucilia caesar 1, sericata 6, Phormia regina 1, 
Pseudopyrellia 7, Stomoxys 2; Ortal.: Chaetopsis (s?) 1. 

Lepidoptera (12:12)—Nymphal.: Phyciodes 1, Vanessa cardui 
1, huntera 1; Lycaen.: Cyaniris 1; Papilion.: Eurymus 1, Pieris 
1, Pontia 1; Hesperi.: Atalopedes 1, Polites 1, Thanaos martialis 1; 
Ctenuch.: Seepsis 1; Noctu.: Plusia simplex 1. 

Coleoptera (3:12)—Cerambyc.: Cyllene robiniae f, 1, n; 
Lampyr.: Chauliognathus pennsylvanicus 10; Scarabae.: Euphoria 
sepulchralis f, 1, n. 

Hemiptera (1:1)—Core.: Alydus eurinus 1. 


Aster sagittifolius——Blooms August 12—November 4; 40 visitors 
observed, August 27—October 26; Mas, R. 

Long-tongued Bees (11)—Ap.: Apis fq; Bomb. (¢' Y) : Bombus 
americanorum ab, consimilis, impatiens se, ab; Megachil. (2) : Mega- 
chile brevis sc, mendica, Xanthosarus sc; Epeol.: Epeolus pusillus 
6; Eucer. (¢) : Melissodes autumnalis se, nivea se, simillima. 

Short-tongued Bees (8)—Halict.: Augochlora viridula Q, se, 
Evylaeus pectoralis 9, Odontalictus ¢', Oxystoglossa pura 4’; Collet.: 
Colletes americanus 9, sc, compactus 2, se, ab; Andren.: Pteran- 
drena asteris 2; Panurg.: Pseudopanurgus asteris J 2, se, in cop. 

Other Hymenoptera (3)—Sphec.: Sphex procera; Vesp.: Ves- 
pula germanica, maculata. 

Diptera (11)—Syrph.: Mesogramma geminata, marginata, Spilo- 
myia longicornis, 4-fasciata, Syrphus ribesii; Hmpid.: Parempis; 
Bombyli: Exoprosopa fascipennis; Sarcophag.: Cynomyia; Muse.: 
Compsomyia, Lucilia caesar, sericata. 

Lepidoptera (3)—Papilion.: Callidryas; Hesperi.: Hesperia; 
Ctenuch.: Scepsis. 

Coleoptera (4)—Chrysomel.: Diabrotica longicornis, vittata ; 
Lampyr.: Chauliognathus pennsylvanicus; Melo.: Epicauta penn- 
sylvanica f, n. 

October 8, 21, 1909, the following 29 species and 81 individuals 
were taken as they came to the flowers: 


CHARLES ROBERTSON 57 


Long-tongued Bees (6: 33)—Ap. Apis 3; Bomb.: Bombus ameri- 
canorum 10, impatiens 12; Megachil.: Xanthosarus 1; Eucer.: Melis- 
sodes autumnalis 6, simillima 1. 

Short-tongued Bees (7: 20)—Halict.: Evylaeus pectoralis 1, 
Odontalictus 3, Oxystoglossa pura 1; Collet.: Colletes americanus 2, 
compactus 11; Andren.: Pterandrena asteris 1; Panurg.: Pesudo- 
panurgus asteris 1. 

Other Hymenoptera (3: 5)—Sphec.: Sphex procera 1; Vesp.: 
Vespula germanica 2, maculata 2. 

Diptera (7: 11)—Syrph.: Mesogramma geminata 1, marginata 1, 
Spilomyia longicornis 2, Syrphus ribesii 3; Empid.: Parempis 1; 
Musc.: Lucilia caesar 2, sericata 1. 

Lepidoptera (2: 4)—Hesperi.: Hesperia 1; Ctenuch.: Scepsis 3. 

Coleoptera (4: 8)— Chrysomel.: Diabrotica longicornis 3, vit- 
tata 1; Lampyr.: Chauliognathus pennsylvanicus 2; Melo.: Epi- 
cauta pennsylvanica 2. 


Aster salicifolius.—Blooms September 23—October 30 ; 44 species 
and 121 individuals taken on the flowers, October 10-22; Mas, R. 

Long-tongued Bees (10: 56)—Ap.: Apis 5; Bomb.: Bombias 
separatus ¢, 1, Bombus americanorum ¢ ¥, 7, impatiens ¢ Y, 26, 
Psithyrus variabilis ¢, 10; Ceratin.: Ceratina 9, 1; Megachil.: 
Megachile brevis 9, 1, Xanthosarus 9, se, 2; sae Melissodes 
agilis 9, 1, simillima Q, se, 2 

Short-tongued Bees (7: 13)—Halict.: Agapostemon radiatus ¢ 
9, se, 2, Augochlora fervida ¢, 1, Chloralictus versatus ¢, 2, Odon- 
talictus ¢ 2, se, 3; Andren.: Pterandrena asteris ?, se, 2, solidaginis 
9, se, 2; Panurg.: Pseudopanurgus compositarum 9, 1 

Other Hymenoptera (2: 4)—Sphec.: Sphex procera 3; Eumen.: 
Leionotus arvensis 1. 

Diptera (16: 26)— Syrph.: Eristalis tenax f, 2, Helophilus 
similis 1, Syritta 1, Syrphus americanus f, 1, ribesii 2; Bombyli.: 
Sparnopolius 2; Conop.: Physocephala texana 1, Stylogaster bian- 
nulata 3; Tachin.: Alophora aeneoventris 1, Archytas analis 3, 
Spallanzania 1; Musc.: Compsomyia 3, Graphomyia 1, Lucilia caesar 
1, sylvarum 1, Pseudopyrellia 2. 

Lepidoptera (8: 20)—Nymphal.: Anosia 1, Euptoieta 1, Vanessa 
eardui 1, huntera 1; Papilion.: Eurymus 12; Hesperi.: Atalopedes 
2, Hesperia 1, Hylephila 1. 

Coleoptera (1: 2)—Chrysomel.: Diabrotica 12-punctata 2 


Aster turbinellus.—Blooms August 21-November 4; 26 species 
and 56 individuals observed, September 20—October 8; Mas, R. 


58 FLOWERS AND INSECTS—XXVI 


Long-tongued Bees (11: 32)— Ap.: Apis se, 6; Bomb.: Bombias 
auricomus <4, 1, Bombus americanorum J 9, se, 4, impatiens 9, se, 7; 
Megachil.: Megachilini: Megachile brevis 9, sc, 1, Xanthosarus 9, ¢, 
1; Coelioxyini: Coelioxys sayi ¢', 1; Nomad.: Holonomada placida 9, 
1; Eucer. (2) : Melissodes autumnalis se, 8, nivea se, 1, simillima 1. 

Short-tongued Bees (3: 3)—Halict.: Agapostemon viridulus 0, 
1, Curtisapis fuscipennis J’, 1; Collet.: Colletes compactus 9, se, 1. 

Diptera (8:13)—Syrph.: Helophilus similis 1, Mesogramma 
marginata 1, Pterallastes f, 1, Syritta 2, Syrphus arcuatus 1; 
Bombyli.: Anthrax haleyon 1, Sparnopolius 2, Systropus 3. 

Lepidoptera (2: 6)—Nymphal.: Phyciodes 3; Hesperi.: Atalo- 
pedes 3. . 

Coleoptera (2: 3)—Chrysomel.: Diabrotica 12-punctata 2; 
Lampyr.: Chauliognathus pennsylvanicus 1. 


Bidens aristosa (15: 4734).—Blooms August 6—October 2; 
133 visitors observed August 26—October 2; Mas, Y. 

Long-tongued Bees (37)—Ap.: Apis ab; Bomb.: Bombias auri- 
comus 4, scutellaris ¢ 9, separatus J %, fq, Bombus americanorum 
& 9, se, ab, impatiens ¢ ? G, se, ab, Psithyrus variabilis 9; Cera- 
tin.: Ceratina 9, se; Megachil.: Trypetini: Neotrypetes productus 
6, truncatus ¢ 9, se; Megachilini: Megachile brevis ¢ 9, se, fq, 
mendica 9, sc, petulans ¢ 9, se; Coelioxyini: Coelioxys 8-dentata 9, 
sayi ¢'; Nomad.: Holonomada vincta ¢, Nomada vicina ¢; Hpeol.: 
Epeolus autumnalis 4, bifasciatus 9, coreopsis J, type, pusillus ¢ 9, 
fq, Triepeolus conecavus 6, concolor ¢ 9, ecressonii ¢ 9, fq, 
donatus ¢' 9, lunatus 9, pectoralis 4, remigatus ¢; Eucer.: Epimelis- 
sodes atripes 9, obliqua ¢ 9, se, Melissodes agilis ¢ 9, fq, autumnalis 
3d &, se, bimaculata 9, boltoniae 9, se, ab, nivea dQ, simillima 0, 
trinodis 3 9, se, fq. 

Short-tongued Bees (22)—Halict.: Agapostemon radiatus 9, se, 
viridulus ¢ 2, se, Augochlora viridula 9, se, Chloralictus pruinosus 
do, Curtisapis coriacea 4’, Odontalictus ?, se, Oxystoglossa pura 2; 
Collet.: Colletes armatus ?, compactus ¢ 9, fq, eulophi 9, se; Du- 
foure.: Halictoides 3; Andren.: Pterandrena aliciae 9, sc, helianthi 
S, pulchella ¢ 2, se; Panurg.: Calliopsis andreniformis 9, colora- 
densis § 9, se, in cop, Perdita J 2, se, ab, in cop, Pseudopanurgus 
compositarum , labrosiformis 9, se, rudbeckiae J 9, se, ab, rugosus 
Q, se, solidaginis J. 

Other Hymenoptera (18)—Philanth.: Cerceris prominens, ful- 
vipes; Sphec.: Sceliphron, Sphex gracilis, nigricans; Bembic.: 
Bembix nubillipennis, spinolae, Bicyrtes 4-fasciata, ventralis; Nys- 
son.: Pseudoplisus divisus; Vesp.: Vespula germanica; Humen.: 


CHARLES ROBERTSON 59 


Ancistrocerus tigris, Leionotus histrionalis; Scoli.: Elis 5-cincta, 
Seolia bicinecta ab, Ichnewmon.: Ceratosoma, Exetastes suaveolens 
fq; Bracon.: Aenignostomus. 

Diptera (34)—Syrph.: Eristalis dimidiatus fq, latifrons, trans- 
versus, vinetorum, Mesogramma polita f, n, Milesia, Orthoneura 
nitida f, n, Syrphus americanus f, n; Bombyli.: Anthrax haleyon, 
Exoprosopa decora, fasciata fq, fascipennis fq, Lepidophora, Spar- 
nopolius ab, Systropus in cop., Toxophora; Conop.: Physocephala 
texana, Robertsonomyia, Zodion fulvifrons; J'achin.: Actia, Api- 
nops, Archytas aterrima fq, Leskiomima secunda, Ocyptera tenuis, 
Peleteria fq, Senotainia trilineata, Siphoplagia anomala fq, Spal- 
lanzania; Dexi.: Ptilodexia, Scotiptera fq; Musc.: Compsomyia, 
Lucilia caesar; Anthomy.: Phorbia platura, Proboscimyia. 

Lepidoptera (15)—Nymphal.: Anosia fq, Argynnis, Basilarchia 
archippus, astyanax, Phyciodes, Vanessa cardui fq; Papilion.: Eu- 
rymus, Laertias, Nathalis, Papilio, Pieris; Hesperi.: Epargyreus, 
Limochores taumas, Thanaos juvenalis; Noctu.: Heliothis armiger. 

Coleoptera (6)—Calandry.: Rhodobaenus gn, n; Chrysomel. 
(f, n) : Chrysomela, Diabrotica 12-punctata; Lampyr.: Chauliogna- 
thus pennsylvanicus ab, in cop; Melo (f, n): Epicauta cinerea, 
pennsylvanica. 

Hemiptera (1)—Pentatom.: Euschistus variolarius. 


Bidens bipinnata.—Blooms August 17—October 26; 11 visitors 
observed, August 29 and September 12; Mas, Y. 

Long-tongued Bees (6)—Ap.: Apis se, fq; Bomb.: Bombus 
americanorum $; Megachil.: Trypetini: Neotrypetes truncatus 2; 
Megachilini: Anthemois 9, sc, Sayapis sayi 2; Coelioxyini: Coelioxys 
sayl ¢. 

Diptera (4)—Syrph.: Syritta; Empid.: Parempis; Tachin.: 
Siphona, Trichophora. 

Lepidoptera (1)—Papilion.: Pieris. 


Bidens connata.—Blooms September 3-26; 2 visitors observed, 
September 22; Mas, Y. 

Long-tongued Bees (2)—Bomb.: Bombus americanorum ¢ 9, 
fq, impatiens 9. 


Bidens frondosa.—Blooms August 27—October 2; 11 visitors 
observed, August 27 and September 11; Mas, Y. 

Long-tongued Bees (2)—Ap.: Apis; Bomb.: Bombus impa- 
tiens 9. 

Short-tongued Bees (3)—WHalict.: Odontalictus ¢, Oxystoglossa 
confusa 9; Collet.: Colletes compactus ¢. 


60 FLOWERS AND INSECTS—XXVI 


Other Hymenoptera (1)—Sphec.: Sphex vulgaris. 

Diptera (4)—Syrph.: Tropidia albistylum; Bombyli.: Exopro- 
sopa decora; Tachin.: Peleteria, Spallanzania. 

Lepidoptera (1)—Nymphal.: Charidryas. 


Bidens laevis (15: 474) —Blooms August 26—October 17; 52 
visitors observed, September 20, 22; Mas, Y. 

Long-tongued Bees (15)—Ap.: Apis ab; Bomb.: Bombias seu- 
tellaris J', separatus 4, Bombus americanorum ¢ 9, fq, impatiens 
9%; Ceratin.: Ceratina 2; Megachil.: Megachile brevis ¢ 9, se, fq, 
mendica ¢, petulans 4, Xanthosarus 9, sc; Epeol.: Epeolus autum- 
nalis 2, type; Eucer.: Melissodes agilis 2, boltoniae 9, se, fq, simil- 
lima J, trinodis 9. 

Short-tongued Bees (4)—Halict.: Chloralictus versatus Q, se, 
Odontalictus ¢; Collet.: Colletes compactus ¢ 2, se, fq; Andren.: 
Pterandrena aliciae 9, se, type. 

Other Hymenoptera (5)—Vesp.: Polistes annularis, pallipes; 
Eumen.: Eumenes fraternus; Scolt.: Scolia bicineta fq; Ichneu- 
mon.: Exetastes suaveolens. 

Diptera (12)—Syrph.: Eristalis dimidiatus ab, transversus ab, 
Helophilus similis, Mesogramma marginata; Bombyli.: Anthrax 
haleyon, Sparnopolius fq, Systoechus; Tachin.: Archytas aterrima 
fq, Siphoplagia anomala; Musc.: Compsomyia fq, Pseudopyrellia 
fq; Anthomy.: Hydrophoria. 

Lepidoptera (14)—Nymphal.: Anosia ab, Basilarchia archippus, 
Phyciodes, Vanessa atalanta, huntera; Lycaen.: Chrysophanus; Pa- 
pilion.: Kurymus fq; Hesperi.: Atalopedes, Hylephila; Ctenuch.: 
Scepsis; Noctu.: Feltia, Heliothis armiger, dipsaceus, Plusia sim- 
plex. 

Coleoptera (2)—Chrysomel.: Diabrotica 12-punctata f, n; 
Lampyr.: Chauliognathus pennsylvanicus ab. 


Boltonia asteroides (15: 458-9). —Blooms August 8—October 4; 
138 visitors observed, August 25—October 4; Mis, W. 

Long-tongued Bees (21)—Ap.: Apis se, ab; Bomb.: Bombias 
scutellaris ¢, Bombus americanorum ¢ 9, impatiens ¢ Y, se; 
Megachil.: Trypetini: Neotrypetes truncatus 9, se; Megachilini: 
Megachile brevis ¢ 9, se, fq, mendica 9, 6-dentata 9, se, Xanthosarus 
2, se; Coelioxyini: Coelioxys 8-dentata 4; Nomad.: Holonomada 
placida J 2; Epeol.: Epeolus bifasciatus 9, pusillus ¢ 2, Triepeolus 
eressonii ¢ 9, fq, pectoralis J 9, fq; Hucer.: Epimelissodes obliqua 
2, s¢, Melissodes asteris 9, se, autumnalis J 9, se, boltoniae 9, se, fq, 
type, nivea 9, se, simillima ¢ 9, se, ab. 


CHARLES ROBERTSON 61 


Short-tongued Bees (20)—Halict.: Agapostemon radiatus 9, 
Chloralictus obscurus ¢, pruinosus ¢ 9, sc, sparsus 9, sc, versatus 
3 9, se, fq, Halictus parallelus ¢, Odontalictus ¢ 9, se, Seladonia 9; 
Sphecodini: Sphecodium cressonii ¢ 9; Prosopid.: Prosopis pyg- 
maea ¢ 9, ab, ziziae ¢'; Collet.: Colletes americanus ¢ 9, se, ab, 
compactus ¢, eulophi 2; Andren.: Pterandrena solidaginis ¢ 9, se, 
fq, in cop; Panurg.: Calliopsis coloradensis ¢ 9, se, ab, in eop, 
Perdita ¢ 9, sc, fq, Perditella boltoniae ¢ 9, se, oligolege, type, 
Pseudopanurgus compositarum ¢ 9, se, ab, type, solidaginis , se. 

Other Hymenoptera (12)—Sphec.: Priononyx thomae, Sphex 
nigricans, pictipennis; Bembic.: Bembix spinolae; Scoli.: Scolia 
bicincta; Philanth.: Cerceris fulvipes; Vesp.: Polistes variatus; 
Eumen.: Leionotus anormis, clypeatus; Larr.: Astatus unicolor, 
Larropsis ; Jchneumon.: Ceratosoma. 

Diptera (60)—Syrph.: Baccha clavata, Eristalis dimidiatus sf, 
latifrons, Mesogramma geminata, marginata sf, polita f, n, Paragus 
tibialis sf, Sphaerophoria sf, Spilomyia longicornis, 4-fasciata, Syr- 
itta sf, ab, Syrphus americanus sf; Empid.: Parempis; Bombyli.: 
Anthrax fulvohirta, Sparnopolius ab, Systoechus, Systropus, Tox- 
ophora; Conop.: Oncomyia, Zodion fulvifrons, nanellum, Robert- 
sonomyia in cop; Tachin.: Alophora aeneoventris, Archytas analis, 
Cistogaster occidua, pallasii, Epigrimyia floridensis, Euacemyia, 
Gymnosoma, Hypostena variabilis, Leucostoma atra, neomexicana, 
Ennyomma globosa, nigrifrons, Ocyptera dosiades, Pachyophthal- 
mus signatus, Paradidyma, Peleteria, Phorantha humeralis, 
magna, purpurascens fq, Senotainia rubriventris, trilineata fq, 
Siphoplagia anomala, Spallanzania fq; Dezxi.: Myocera; Sar- 
cophag.: Helicobia helicis, Sarecophaga hunteri, sinuata; Muse.: 
Compsomyia, Graphomyia, Lucilia sericata, Pseudopyrellia, Sto- 
moxys; Anthomy.: Anthomyiella, Calythea, Limnophora, Probos- 
cimyia ; Seps.: Sepsis; Trypet.: Trypeta humilis ab. 

Lepidoptera (20)—Nymphal.: Anosia, Junonia, Phyciodes, 
Vanessa eardui, huntera; Lycaen.: Chrysophanus, Everes, Heodes, 
Uranotes; Papilion.: Eurymus fq, Pieris, Pontia; Hesperi.: Ancy- 
loxypha, Hesperia, Hylephila, Limochores taumas, Polites; Arcti.: 
Utetheisa ; Ctenuch.: Scepsis; Noctu.: Heliothis armiger. 

Coleoptera (4)—Chrysomel. (f, fq, n) : Diabrotica 12-punctata, 
longicornis; Coccinell.: Hippodamea parenthesis f, n; Lampyr.: 
Chauliognathus pennsylvanicus fq. 

Hemiptera (1)—Caps.: Lygus fa. 

October 15, 17, the following 40 species and 186 individuals 
were taken as they came to the flowers: 


62 FLOWERS AND INSECTS—XXVI 


Long-tongued Bees (8: 66)—Ap.: Apis 3; Megachil.: Mega- 
chile brevis 3; Epeol.: Epeolus pusillus 1, Triepeolus cressonii 1; 
Eucer.: Melissodes asteris 2, boltoniae 2, nivea 3, simillima 51. 

Short-tongued Bees (5: 20)—Halict.: Chloralictus versatus 13; 
Panurg.: Calliopsis coloradensis 1, Perdita 3, Pseudopanurgus com- 
positarum 2, solidaginis 1. 

Other Hymenoptera (1: 1)—Eumen.: Leionotus anormis 1. 

Diptera (17: 79)—Syrph.: Eristalis latifrons 3, Mesogramma 
geminata 1, marginata 2, polita 2, Syritta 7; Bombylt.: Sparnopo- 
lius 39; Conop.: Zodion fulvifrons 1; Tachin.: Cistogaster occidua 
1, Phorantha humeralis 5, magna 1, Senotainia rubriventris 5, trili- 
neata 2, Siphoplagia anomala 1, Spallanzania 2; Sarcophag.: Heli- 
cobia helicis 1; Musc.: Graphomyia 1; Anthomy.: Limnophora 5. 

Lepidoptera (6: 9)—Nymphal.: Anosia 1, Phyciodes 3; Papil- 
ion.: Eurymus 2; Hesperi.: Hylephila 1, Limochores taumas 1, 
Polites 1. 

Coleoptera (3: 11)—Chrysomel.: Diabrotica 12-punctata 1, lon- 
gicornis 1; Lampyr.: Chauliognathus pennsylvanicus 9. 


Brauneria pallida (15: 465-6) —Blooms May 25—June 30; 38 
visitors observed, May 25—June 21; Mas, R. 

Long-tongued Bees (14)—Ap.: Apis se; Bomb. (9): Bombias 
auricomus, separatus, Bombus americanorum, Psithyrus variabilis; 
Ceratin.: Ceratina 2, se; Megachil.: Megachilini: Cyphopyga 2, 
Megachile brevis ¢ 9, mendica 9, Sayapis pugnata <4; Coelioxyini: 
Coelioxys 8-dentata ¢; Xylocop.: Xylocopa 9; Nomad.: Holono- 
mada affabilis ¢ 2, superba 9. 

Short-tongued Bees (9)—Halict. (2): Agapostemon texanus se, 
viridulus se, Chloralictus pilosus, pruinosus, versatus sc, Odontalic- 
tus sec, Oxystoglossa confusa, similis; Panurg.: Pseudopanuregus al- 
bitarsis ¢ 9, se. 

Other Hymenoptera (1)—Sphec.: Sphex nigricans. 

Diptera (1)—Tachin.: Spallanzania. 

Lepidoptera (12)—Nymphal.: Anosia, Basilarchia archippus, 
Charidryas, Vanessa atalanta, huntera; Lycaen.: Chrysophanus; 
Papilion.: Eurymus, Papilio, Pontia; Hesperi.: Limochores taumas, 
Polites; Sphing.: Hemaris thysbe. 

Coleoptera (1)—Cerambyc.: Typocerus sinuatus f, n. 


Brauneria purpurea (15: 466).—Blooms June 16—September 26; 
48 visitors observed, July 8-September 14; Mas, R. 

Long-tongued Bees (16)—Ap.: Apis fq; Bomb.: Bombias auri- 
comus ¢ Q, scutellaris 9, separatus ¢ 9, Bombus americanorum 


CHARLES ROBERTSON 63 


od %, impatiens ¥, Psithyrus variabilis 2; Ceratin.: Ceratina 9, se; 
Megachil.: Osmiini: Ashmeadiella 2, se; Megachilini: Megachile 
brevis 9, petulans 9, se, Sayapis sayi ¢; Epeol.: Triepeolus con- 
eavus 9; Eucer.: Epimelissodes obliqua ¢ °, se, fq, Melissodes bi- 
maculata ¢ 9, enici 9. 

Short-tongued Bees (7)—Halict.: Agapostemon viridulus ¢ 9, 
se, Chloralictus pilosus 9, se, sparsus 9, se, versatus 2, Evylaeus 
pectoralis 2, se, Odontalictus 9, se, fq; Panurg.: Pseudopanurgus 
albitarsis 9, se. 

Other Hymenoptera (3)—Sphec.: Sphex nigricans, procera; 
Larr.: Tachytes aurulentus. 

Diptera (9)— Syrph.: Volucella vesiculosa ; Empid.: Parempis; 
Bombyli.: Anthrax haleyon, parvicornis, Exoprosopa decora, fas- 
ciata, Geron rufipes, Systoechus; Conop.: Zodion obliquefaseciatum. 

Lepidoptera (13)—Nymphal.: Anosia, Argynnis, Charidryas, 
Euptoieta, Vanessa ecardui, huntera; Papilion.: Euphoeades, Eury- 
mus, Jasoniades, Pieris, Pontia; Hesperi.: Hesperia, Thorybes 
bathyllus. 


Cacalia atriplicifolia—Blooms July 28-September 20; 10 visi- 
tors observed, August 4; Mis, W. 

Short-tongued Bees (2, 2, ¢)—Halict.: Chloralictus sparsus, 
Odontalictus. 

Other Hymenoptera (7)—Crabron.: Solenius; Orybel.: Noto- 
glossa americana, Oxybelus 4-notatus; Philanth.: Philanthus pune- 
tatus ; Sphec.: Sphex vulgaris; Eumen.: Eumenes fraternus ; Scoli.: 
Scolia bicincta. 

Diptera (1)—Empid.: Parempis ab. 

Cacalia reniformis.—Blooms June 25—July 31; 39 visitors ob- 
served, June 25—July 16; Mis, W. 

Long-tongued Bees (5)—Ap.: Apis; Ceratin.: Ceratina 92, se, 
Zaodontomerus ¢'; Megachil.: Neotrypetes truncatus 2, se; Eucer.: 
Melissodes bimaculata 9°. 

Short-tongued Bees (11)—Halict.: Agapostemon radiatus d, 
Augochlora viridula ¢ 2, fq, Chloralietus eressonii ¢, sparsus 9, 
versatus 9, se, fq, zephyrus 2, Evylaeus foxii ¢, pectoralis ¢ 9, 
Oxystoglossa pura 9°, fq; Prosopid.: Prosopis pygmaea ¢, sayi ¢- 

Other Hymenoptera (11)—Sphec.: Sphex gracilis, nigricans, 
vulgaris; Eumen.: Ancistrocerus tigris, fq, Eumenes fraternus, 
Leionotus dorsalis, fundatus fq, perennis, 4-sectus, ziziae; Crabron.: 
Solenius. 

Diptera (9)—Tipul.: Geranomyia; Syrph.: Sphaerophoria, 


64 FLOWERS AND INSECTS—XXVI 


Syritta fq; Empid.: Parempis fq; Conop.: Oncomyia, Zodion nanel- 
lum; Tachin.: Epigrimyia floridensis, Senotainia trilineata, Siphona 
fq. 

Lepidoptera (1)—WSes?.: Sesia 6-fasciata. 

Hemiptera (2)—Caps.: Lopidea fq; Lygae.: Melanocoryphus. 


Cacalia tuberosa.—Blooms June 17—July 17; 5 visitors observed, 
July 4; Mis, W. 

Short-tongued Bees (1)—Halict.: Sphecodes arvensis ¢. 

Other Hymenoptera (1)—WScoli.: Elis 5-cincta. 

Lepidoptera (2)—Lycaen.: Chrysophanus; Ctenuch.: Scepsis. 

Hemiptera (1)—Lygae.: Lygaeus. 


Chrysanthemum leucanthemum (int.).— Blooms May 24— 
August 16; 22 visitors observed, May 28—June 21; Mis, W. 

Long-tongued Bees (6)—Ceratin.: Ceratina 9, sc; Stelid.: 
Chelynia 3, Microstelis ¢ 9, fq; Megachil.: Neotrypetes truncatus 
2, se, Aleidamea simplex ¢'; Nomad.: Centrias americanus ¢ 9. 

Short-tongued Bees (3)—Halict. (9, se, ab): Odontalictus, 
Oxystoglossa similis; Panurg.: Calliopsis andreniformis <j, ab. 

Other Hymenoptera (1)—KHumen.: Leionotus ziziae. 

Diptera (11)—Syrph.: Eristalis latifrons, Sphaerophoria, Sy- 
ritta, Tropidia mamillata; Empid.: Parempis fq, type; Conop.: 
Zodion fulvifrons; Tachin.: Distichona varia, Leucostoma atra, 
Phorantha purpurascens ab; Musc.: Pseudopyrellia; Anthomy.: 
Phorbia platura. 

Coleoptera (1)—Scarabae.: Trichius piger f. 


Cirsium altissimum (15: 475)—Blooms July 23—October 23;. 
23 visitors observed, August 14—October 23; Mas, R. 

Long-tongued Bees (13)—Ap.: Apis sc; Bomb.: Bombias auri- 
comus ¢ G, scutellaris f° 9, Bombus americanorum ¢ 4, se, fq, 
consimilis ¢ 9, se, impatiens ¢ %, se, Psithyrus variabilis ¢; 
Ceratin.: Ceratina 2; Megachil.: Neotrypetes truncatus 9, se, n; 
Epeol.: Triepeolus donatus ¢ 9; Eucer.: Epimelissodes obliqua Q, 
ce, Melissodes agilus 0, enici ¢ F, se, fq. 

Short-tongued Bees (2)—AHalict.: Agapostemon viridulus 2, 
Chloralictus sparsus 9, ¢, n. 

Lepidoptera (8)—Nymphal.: Argynnis, Basilarchia archippus, 
Vanessa atalanta; Papilion.: Euphoeades, Heraclides, Jasoniades; 
Sphing.: Deilephila, Hemaris thysbe. 


Cirsium discolor (51:475).—Blooms July 29-October 20; 31 
visitors observed, August 21—October 20; Mas, R. 


CHARLES ROBERTSON 65 


Long-tongued Bees (14)—Bomb.: Bombias auricomus ¢ 2 ¥, 
se, fq, scutellaris ¢ ¥, sc, separatus ¢ 2, Bombus americanorum 
3& 2 Y, se, ab, impatiens 2 %, sc, Psithyrus variabilis ¢ 9, ab; 
Megachil.: Xanthosarus ¢ 9, se, fq; Epeol.: Triepeolus concavus 
3 2; Eucer.: Epimelissodes obliqua ¢ 9, se, ab, Melissodes agilis J, 
enici ¢ 9, se, ab, coloradensis 9, sc, variabilis ¢; Emphor.: Meli- 
toma 9. 

Short-tongued Bees (5, 2, ¢, n)—Halict.: Chloralictus prui- 
nosus, sparsus, versatus, Odontalictus; Collet.: Colletes eulophi. 

Diptera (2)—Bombyli.: Exoprosopa fasciata, Systoechus. 

Lepidoptera (9)—Nymphal.: Anosia, Argynnis, Speyeria, Va- 
nessa cardui; Papilion.: Callidryas, Heraclides, Papilio; Sphing.: 
Deilephila, Hemaris thysbe. 

Coleoptera (1)—Chrysomel.: Diabrotica longicornis f, n. 


Cirsium lanceolatum (int, 15: 475-6).—Blooms June 24—Octo- 
ber 27; 48 visitors observed, July 3—October 27; Mas, R. 

Long-tongued Bees (25)—Bomb.: Bombias auricomus %, sepa- 
ratus ¢ 9, fq, Bombus americanorum ¢ @ 9, se, ab, in cop, con- 
similis %, impatiens 9, fq, Psithyrus laboriosus ¢, variabilis ¢; 
Megachil.: Megachile 6-dentata ¢, type, Xanthosarus Q, se, fq; 
Epeol.: Triepeolus concavus ¢, concolor ¢ 9, fq, donatus ¢, neva- 
densis 4, remigatus 2; Eucer.: Epimelissodes obliqua ¢ 9, fq, Melis- 
sodes agilis ¢, bimaculata 9, enici ¢ 9, se, ab, in cop, type, colo- 
radensis ¢, comptoides ¢ 9, simillima ¢, trinodis 9, variabilis 9; 
Emphor.: Emphor ¢; Anthophor.: Amegilla ¢. 

Short-tongued Bees (6)—Halict.: Agopostemon radiatus ¢, 
texanus 9, sc, viridulus ¢ 9, se, Chloralictus pilosus 92, ¢, n, Odon- 
talictus 9, ¢, n; Nomt.: Paranomia 9. 

Diptera (3)—Bombyli.: Exoprosopa fasciata, Systoechus fq; 
Conop.: Physocephala tibialis. 

Lepidoptera (14)—Nymphal.: Anosia, Phyciodes, Speyeria; 
Papilion.: Euphoeades, Eurymus, Jasoniades, Papilio, Pontia, 
Xanthidia; Hesperi.: Atrytone zabulon, Limochores taumas fq, 
Polites, Thorybes bathyllus; Ctenuch.: Scepsis. 


Cirsium pumilum—Blooms May 25—June 29; 17 visitors ob- 
served, May 29, June 26; Mas, R. 

Long-tongued Bees (4, 9)—Bomb.: Bombus americanorum, 
Psithyrus variabilis; Megachil.: Cyphopyga sc, Sayapis pugnata se. 

Short-tongued Bees (1)—Halict.: Evylaeus pectoralis 9, e, n. 

Lepidoptera (9)—Nymphal.: Anosia, Argynnis ab, Speyeria; 
Papilion.: Euphoeades, Eurymus, Heraclides, Laertias; Hesperi.: 

_ Polites, Thorybes bathyllus. 


66 . FLOWERS AND INSECTS—XXVI 


é 
Coleoptera (2, f, n)—Cerambyc.: Typocerus_ sinuatus; 
Scarabae.: Trichius piger gn, in cop, ab. 
Hemiptera (1)—Lygae.: Lygaeus. 


Coreopsis palmata (15:472)—Blooms June 3—July 24; 116 
visitors observed, June 6-—July 2; Mas, Y. 

Long-tongued Bees (33)—Ap.: Apis sc; Bomb.: Bombus ameri- 
canorum ? §; Ceratin.: Ceratina 9, se, fq; Stelid.: Anthidium cog- 
natum 6, Microstelis 9; Megachil.: Trypetini: Neotrypetes trun- 
catus ¢ 9, sc; Osmiini: Alcidamea simplex 9, Ashmeadiella ¢ Q, 
Gnathosmia 9, se; Megachilini: Chelostomoides ¢, Cyphopyga 0, 
Megachile addenda J, brevis ¢' 9, se, ab, in cop, mendica ¢ 9, petu- 
lans 3, 6-dentata 3 9, se, Sayapis pollicaris ¢ 9, se, pugnata J 9, se, 
fq, Xanthosarus ?; Coelioxyini: Coelioxys 8-dentata ¢ 9, ab, sayi 
3 2; Nomad.: Centrias americanus , erigerontis ¢' 9, Holonomada 
superba 2; Pasit.: Holeopasites illinoensis ¢ 9, fq; Epeol.: Epeolus 
bifasciatus J, interruptus ¢' 9; Melect.: Melecta 3; Eucer.: Melis- 
sodes agilis 4, boltoniae 9, sc, coreopsis ¢ 9, se, fq, oligolege, type, 
petalostemonis 9, ab, trinodis 9, se. 

Short-tongued Bees (21)—Halict.: Agapostemon radiatus 9, se, 
texanus 9, viridulus 9, Augochlora fervida ?, Chloralictus coreopsis 
3 2, se, fq, type, obscurus J, pilosus ¢ 9, se, fq, pruinosus J 9, se, 
tegularis ¢, versatus ¢ 9, sc, ab, Evylaeus arcuatus 92, se, foxii 0, 
pectoralis ¢ 9, sec, Halictus lerouxii J 9, se, Odontalictus ¢ 9, se, fa, 
Oxystoglossa confusa ¢ 9, similis ¢' 9, sc, Seladonia ¢ Q, se; 
Andren.: Pterandrena rudbeckiae ¢' 2; Panurg.: Calliopsis andreni- 
formis ¢' 2, ab, Pseudopanurgus albitarsis ¢ 9. 

Other Hymenoptera (14)—Sphec.: Priononyx atrata, thomae, 
Sphex pictipennis, nigricans, procera, vulgaris; Bembic.: Bembix 
spinolae, Bicyrtes ventralis, Stictiella; Philanth.: Cereeris promi- 
nens; Humen.: Leionotus anormis, arvensis, histrionalis; Bracon.: 
Toxoneuron abdominale. 

Diptera (30)—Stratiomy.: Odontomya nigrirostris; Syrph.: 
Eristalis flavipes, latifrons, tenax, transversus, Helophilus latifrons, 
Mesogramma marginata, Sphaerophoria, Syrphus ribesii; Bombyli.: 
Anthrax parvicornis, Exoprosopa decora, emarginata, Geron rufipes, 
Systoechus, Thripsogaster fq, Toxophora; Conop.: Oncomyia, 
Physocephala tibialis, Zodion fulvifrons; Tachin.: Archytas analis, 
Euphorocera claripennis, Linnaemyia, Ocyptera lata, Peleteria, 
Spallanzania; Musc.: Lucilia caesar, Pseudopyrellia, Stomoxys; 
Anthomy.: Proboscimyia; Agromyz.: Eusiphona. 

Lepidoptera (14)—Nymphal.: Argynnis, Phyciodes, Vanessa 
huntera ; Lycaen.: Uranotes; Papilion.: Euphoeades, Eurymus, 


CHARLES ROBERTSON 67 


Pieris, Pontia; Hesperi.: Atrytone zabulon, Limochores taumas, 
Pholisora catullus, Thanaos juvenalis; Ctenuch.: Scepsis; Noctu.: 
Plusia simplex. 

Coleoptera (4)—Cerambyc.: Typocerus sinuatus f, n; Melo.: 
Epicauta cinerea f, n; Mordell.: Mordella marginata, scutel- 
laris f, n. 


Coreopsis tripteris (15:472-3).—Blooms July 23-September 
26; 53 visitors and 185 individuals observed, August 12-September 
3; Mas, Y. 

Long-tongued Bees (18:83)—Ap.: Apis se, 1; Bomb.: Bombus 
americanorum ¢ %, 13, impatiens %, 1; Ceratin.: Ceratina 9, se, 5, 
Megachil. (2) : Cyphopyga 1, Megachile brevis se, 1, petulans se, 9; 
Epeol.: Epeolus pusillus 2, 1, Triepeolus concavus 2, 1, donatus 
9, 1, lunatus 0, 1; Eucer.: Epimelissodes obliqua 2, se, 32, Melis- 
sodes agilis ¢ 9, 2, autumnalis ¢, 2, coloradensis 2, se, 1, nivea 
do, 1, simillima ¢ 9, 4, trinodis J, 6. 

Short-tongued Bees (12: 31)—Halict.: Augochlora fervida (4, 1, 
Chloralictus coreopsis 9, se, 1, pilosus 2, 1, tegularis 9, se, 1, ver- 
satus 9, se, 1, Curtisapis coriacea ¢, 2, Evylaeus pectoralis 2, 1, 
Odontalictus 9, se, 13; Andren.: Pterandrena pulchella ¢ 9, se, 4; 
Panurg.: Calliopsis coloradensis 9, se, 1, Pseudopanurgus labrosi- 
formis ¢ 9, type, 2, solidaginis J, 3. 

Other Hymenoptera (10: 32)—WSphec.: Sphex gracilis 3, nigri- 
cans 2, pictipennis 2, procera 7, vulgaris 2; Bembic.: Bicyrtes ven- 
tralis 2; Scoli.: Seolia bicineta 9; Philanth.: Philanthus punctatus 
1; Eumen.: Leionotus anormis 1, arvensis 2. 

Diptera’ (9:34)—Syrph.: Pipiza nigribarba f, 1, Syritta 2; 
Bombyli.: Anthrax haleyon 4, Lepidophora 1, Sparnopolius 18, 
Systoechus 4; Conop.: Zodion obliquefasciatum 1; T'achin.: Epi- 
grimyia geniculata 1, Siphoplagia anomala 2. 

Lepidoptera (3:4)—Nymphal.: Anosia 1, Phyciodes 1; 
Hesperi.: Limochores taumas 2. 

Coleoptera (1:1)—Lampyr.: Chauliognathus pennsylvanicus 1. 


Erechthites hieracifolia——Blooms August 20-September 25; 
13 visitors observed, August 29-September 16; Mis, Y. 

Long-tongued Bees (2)—Ap.: Apis ab; Megachil.: Megachile 
brevis 9. 

Short-tongued Bees (1)—Halict.: Agapostemon radiatus 9. 

Other Hymenoptera (8)—~Scoli.: Elis 5-cineta; Vesp.: Polistes 
pallipes, variatus, Vespula germanica; HLumen.: Ancistrocerus 
capra, Leionotus arvensis, Zethus; Pompil.: Arachnoproctonus. 


68 FLOWERS AND INSECTS—XXVI 


Diptera (1)—Tachin.: Archytas aterrima. 
Lepidoptera (1)—Lycaen.: Chrysophanus. 


Erigeron annuus.—Blooms May 26—-September 15; 2 visitors 
observed, June 2 and 15; Mis, W. 

Long-tongued Bees (1)—Megachil.: Neotrypetes truncatus 9. 

Diptera (1)—Tachin.: Apinops. 


Erigeron canadensis.—Blooms August 16—October 29; 18 vis- 
itors observed, September 1, October 29; Mis, W. 

Long-tongued Bees (1)—£peol.: Epeolus pusillus 2%. 

Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, se. 

Other Hymenoptera (7)—Philanth.: Cerceris clypeata, Eucer- 
ceris; Vesp.; Polistes variatus; Humen.: Ancistrocerus tigris; 
Crabron.: Anacrabro; Larr.: Tachytes elongatus; Ichneumon.: 
Ceratosoma. 

Diptera (9)—Syrph.: Eristalis tenax, Mesogramma marginata, 
Syritta; Conop.: Oncomyia; Tachin.: Ocyptera lata, Senotainia 
trilineata; Sarcophag.: Helicobia helicis; Musc.: Musca, Pollenia, 
Pseudopyrellia. 


Erigeron philadelphicus (15:461).—Blooms April 23—June 
13; 64 visitors observed, May 14-June 5; Mis, W. 

Long-tongued Bees (12)—Ap.: Apis; Bomb.: Bombias sep- 
aratus 9; Ceratin.: Ceratina ¢ 9, sc, ab, Zaodontomerus J, fq; 
Stelid.: Microstelis 3, fq; Megachil.: Trypetini: Neotrypetes trun- 
catus 3; Osmiini: Alcidamea simplex ¢ 9, Gnathosmia 9, se; 
Megachilini: Megachile brevis ¢; Nomad.: Centrias americanus 
3 9, ab, Holonomada superba 0’, Nomada eressonii ¢. 

Short-tongued Bees (14)—Halict. (9) : Agapostemon viridulus, 
Chloralictus albipennis, pilosus sc, sparsus, versatus se, fq, Curtis- 
apis coriacea sc, Evylaeus pectoralis sc, fq, Odontalictus se, ab, 
Oxystoglossa confusa, similis sc, Seladonia se, fq; Sphecodini: 
Sphecodium eressonii; Prosopid.: Prosopis pygmaea ¢; Andren.: 
Trachandrena mariae 9. 

Other Hymenoptera (5)—Sphec.: Sphex vulgaris; Humen.: 
Leionotus anormis ab, clypeatus ab, foraminatus, illinoensis type. 

Diptera (20)—Syrph.: Mesogramma marginata, Paragus bi- 
color, tibialis, Sphaerophoria; Bombyli.: Aldrichia f, fq, Conop.: 
Oncomyia, Zodion fulvifrons fq; Tachin.: Apinops atra type, Cis- 
togaster occidua ab, pallasii, Epigrimyia floridensis, Leucostoma 
atra, Phorantha purpurascens, Siphona; Sarcophag.: Helicobia 
helicis, Sarcophaga cimbicis, sinuata; Musc.: Pseudopyrellia; 
Anthomy.: Calythea, Phorbia platura. 


CHARLES ROBERTSON 69 


Lepidoptera (7)—Nymphal.: Phyciodes; Lycaen.: Chryso- 
phanus; Papilion.: Xanthidia; Hesperi.: Ancyloxypha, Limochores 
taumas, Polites; Ctenuch.: Scepsis. 

Coleoptera (3, f, n)—Chrysomel.: Diabrotica 12-punctata; 
Lampyr.: Telephorus flavipes; Scarabae.: Trichius piger ab. 

Hemiptera (3)—Beryt.: Corizus; Caps.: Calocoris, Lygus. 


Erigeron pulchellus.—Blooms April 27—June 7; 5 visitors 
observed, May 4; Mis, W. 

Long-tongued Bees (2)—Ceratin.: Ceratina ¢; Nomad.: Cen- 
trias americanus 9. 

Short-tongued Bees (1)—WHalict.: Odontalictus 9, se. 

Lepidoptera (2)—Lycaen.: Everes ; Hesperi.: Thanaos juvenalis. 


—  Erigeron ramosus (15:461-2).—Blooms May 17-—September 
15; 78 visitors observed, May 31—July 13; Mis, W. 

Long-tongued Bees (12)—Ap.: Apis; Ceratin.: Ceratina Jf 9, 
se, fq, Zaodontomerus ¢; Stelid.: Microstelis ¢ 9, fq, Stelidium ¢, 
fq; Megachil.: Neotrypetes productus J, truncatus ¢ Q, se, ab; 
Nomad. (9) : Centrias americanus, erigerontis, type, Nomada dentic- 
ulata; Pasit.: Holeopasites illinoensis ¢ 9, fq; Epeol.: Epeolus 
bifasciatus ¢. fam 

Short-tongued Bees (16)—JHalict.: Chloralictus albipennis 9, 
se, fq, pruinosus 2, se, sparsus ?, se, tegularis 2, se, versatus ¢ 9, 
se, zephyrus 4, Evylaeus pectoralis 9, sc, Odontalictus 9, se, fq, 
Oxystoglossa similis 9, se, Seladonia 9, se, fq ; Sphecodini: Machaeris 
stygia 2, Sphecodium cressonii 9; Prosopid.: Prosopis eulophi 0, 
pygmaea 9, ziziae 2; Collet.: Colletes eulophi 2. 

Other Hymenoptera (10)—Sphec.: Sphex pictipennis; Philanth.: 
Cerceris clypeata; Eumen.: Leionotus anormis fq, clypeatus, his- 
trionalis, ziziae; Oxybel.: Notoglossa frontalis; Chrysid.: Tetra- 
chrysis montana; Chalcid.: Leucospis; Bracon.: Bracon longicauda. 

Diptera (36)—Syrph.: Eristalis dimidiatus, latifrons, Meso- 
gramma geminata, marginata fq, Paragus bicolor, tibialis, Sphae- 
rophoria, Syritta, Tropidia mamillata; EHmpid.: Parempis; 
Bombyli.: Bombylius atriceps, Exoprosopa fascipennis, Oncodocera, 
Toxophora; Conop.: Zodion fulvifrons; Tachin.: Apinops, Cisto- 
gaster occidua, pallasii, Epigrimyia polita, Gymnosoma, Leucostoma 
atra, Ocyptera nigra, tenuis, Pachyophthalmus floridensis, Phor- 
antha humeralis fq, purpurascens, Senotainia rubriventris fq, tri- 
lineata, Siphona; Sarcophag.: Helicobia helicis, Sareophaga cim- 
bicis; Musc.: Pseudopyrellia; Anthomy.: Calythea, Limnophora, 
Phorbia platura; Agromyz.: Lobioptera. 


70 FLOWERS AND INSECFS—XXVI 


Lepidoptera (1)—Lycaen.: Chrysophanus. 

Coleoptera (2, f, n)—Malach.: Collops; Mordell.: Mordellistena 
comata. 

Hemiptera (1)—Caps.: Lygus ab. 


Eupatorium altissimum.—Blooms July 22—October 5; 79 vis- 
itors observed, August 25-September 24; Mis, W. 

Long-tongued Bees (9)—Ap.: Apis fq; Bomb.: Bombias scutel- 
laris ¢', Bombus americanorum 9, impatiens ¢' 9%; Ceratin.: Ceratina 
2; Nomad.: Nomada vicina ¢ 9, ab; E'peol.: Triepeolus donatus J, 
pectoralis ¢, fq; Eucer.: Melissodes simillima ¢ 9, fq. 

Short-tongued Bees (138)—Halict.: Augochlora fervida 3, viri- 
dula ¢', Chloralictus illinoensis 0’, sparsus <4, versatus (i, zephyrus 
36, Odontalictus ¢ 9, Oxystoglossa similis 9, Seladonia 2; Prosopid.: 
Prosopis ziziae 2; Collet.: Colletes americanus ¢; Andren.: Pteran- 
drena asteris ¢ 9, fq; Panurg.: Perdita . 

Other Hymenoptera (25)—Sphec.: Isodontia apicalis, Sphex 
nigricans fq, procera; Bembic.: Bicyrtes ventralis, Megastizus; 
Scol.: Elis interrupta, 5 cincta, Scolia bicincta fq; Philanth.: 
Eueerceris, Philanthus ventilabris; Vesp.: Polistes annularis, pal- 
lipes, variatus; Humen.: Ancistrocerus campestris, tigris, Humenes 
fraternus, Leionotus foraminatus, Zethus; Crabron.: Protothyre- 
opus bigeminus; Oxybel.: Oxybelus packardii; Larr.: Larropsis fq; 
Pompil.: Lophopompilus philadelphicus, Priocnemoides fulvicornis ; 
Chrysid.: Hedychrum wiltii; Ichnewmon.: Ceratosoma. 

Diptera (25)—Syrph.: Milesia, Spilomyia longicornis, Syritta; 
Empid.: Parempis; Bombyli.: Anthrax hypomelas, Exoprosopa 
fasciata, Sparnopolius, Toxophora; Conop.: Conops xanthopareus, 
Oncomyia; TYachin.: Actia, Alophora fumosa, Archytas analis, 
aterrima, Cistogaster pallasii, Leskiomima secunda, Linnaemyia, 
Ennyomma globosa, Phorantha asteris, Senotainia trilineata, Spal- 
lanzania; Musc.: Compsomyia, Graphomyia, Morellia, Pseudo- 
pyrellia. 

Lepidoptera (6)—Nymphal.: Charidryas, Euphydryas, Phy- 
ciodes; Papilion.: Pontia; Hesperi.: Limochores taumas, Polites; 
Ctenuch.: Scepsis. 

Coleoptera (1)—Scarabae.: Euphoria sepulchralis. 


Eupatorium coelestinum.—Blooms July 4-September 22; 26 
species and 80 individuals observed, September 16, 17, 22; Mas, R. 

Long-tongued Bees (6:11)—Ap.: Apis 1; Bomb.: Bombus 
americanorum 9, sc, 3, Psithyrus variabilis 4, 1; Ceratin.: Ceratina 
?, 1; Megachil.: Megachile mendica 9, sc, 3; EHucer.: Melissodes 
bimaculata 9, se, 2. 


CHARLES ROBERTSON 71 


Short-tongued Bees (5:7)—Halict.: Augochlora viridula 9, se, 
1, Chloralictus sparsus 9, 1, Odontalictus i 9, se, 3, Oxystoglossa 
confusa <, 1, similis 2, se, 1. 

Other Hymenoptera (1:2)—Sphec.: Sphex nigricans 2. 

Diptera (5:12)—Syrph.: Mesogramma geminata f, 4; Bombyli.: 
Sparnopolius 1; Tachin.: Siphoplagia anomala 5; Dezi.: Ptilodexia 
1; Musc.: Stomoxys 1. 

Lepidoptera (8:47)—Nymphal.: Anosia 3, Basilarchia archip- 
pus 1, Phyciodes 8; Papilion.: Eurymus 12; Hesperi.: Euphyes 
metacomet 12, Limochores taumas 2, Polites 5; Ctenuch.: Scepsis 4. 

Coleoptera (1:1)—Lampyr.: Chauliognathus pennsylvanicus 1. 


Eupatorium perfoliatum (15: 453).—Blooms July 16-Septem- 
ber 23; 98 visitors observed, August 13-September 11; Mis, W. 

Long-tongued Bees (6)—Ap.: Apis fq; Bomb.: Bombias scutel- 
laris %, separatus ¢, Bombus impatiens $; Megachil. (9, c) : Mega- 
chile brevis, mendica. 

Short-tongued Bees (8)—Halict.: Augochlora fervida ¢, Halic- 
tus lerouxii #, Odontalictus 9, se, fq, Oxystoglossa similis 2; Spheco- 
dini: Sphecodium pimpinellae ¢; Prosopid.: Prosopis pygmaea 0, 
ziziae ¢; Collet.: Colletes eulophi J. 

Other Hymenoptera (44)—Sphec.: Ammobia ichneumonea, 
nuda, Isodontia apicalis, Sceliphron, Sphex gracilis, nigricans fq, 
procera, vulgaris; Bembic.: Megastizus; Scoli.: Elis interrupta ab, 
5-cineta fq, Scolia bicineta ab; Philanth.: Cerceris clypeata, promi- 
nens, Eucerceris ab, Philanthus punctatus; Vesp.: Polistes annu- 
laris, pallipes, rubiginosus, variatus, Vespula germanica, maculata ; 
Eumen.: Ancistrocerus campestris, capra, tigris ab, Eumenes fra- 
ternus, Leionotus anormis, foraminatus; Crabron.: Anacrabro, Hy- 
pocrabro, Protothyreopus bigeminus, rufifemur, Solenius fq, Syno- 
thyreopus; Ozybel.: Notoglossa americana, frontalis; Larr.: 
Larropsis ab, Tachysphex acutus, Tachytes elongatus; Chrysid.: 
Hedychrum violaceum, wiltii; Chalcid.: Perilampus cyaneus; 
Ichneumon.: Ceratosoma, Porizon albipennis. 

Diptera (27)—Stratiomy.: Nemotelus; Syrph.: Chilosia pune- 
tulata, Mesogramma marginata, polita, Spilomyia longicornis, 
Syrphus ribesii; Empid.: Parempis; Bombyli.: Exoprosopa fasciata, 
Sparnopolius; Conop.: Conops xanthopareus, Oncomyia; Tachin.: 
Archytas analis fq, aterrima, hystrix, Cistogaster occidua, Cly- 
tiomyia, Ennyomma globosa, Siphoplagia anomala, Xanthomelana ; 
Sarcophag.: Helicoba helicis, Sarcophaga assidua; Musec.: Comp- 
somyia, Lucilia caesar, Phormia regina, Pseudopyrellia, Stomoxys; 
Anthomy.: Lispa albitarsis. 


72 FLOWERS AND INSECTS—XXVI 


Lepidoptera (7)—Nymphal.: Anosia, Phyciodes; Papilion.: 
Eurymus; Hesperi.: Ancyloxypha, Pamphila dion; Ctenuch.: 
Scepsis; Noctu.: Drasteria erechtea. 

Coleoptera (6)—Chrysomel.: Ceratoma fq; Curculion.: Cen- 
trinus scutellum album; Lampyr.: Chauliognathus pennsylvanicus ; 
Melo.: Epicauta pennsylvanica f, n; Rhipiphor.: Rhipiphorus lim- 
batus; Scarabae.: Euphoria sepulchralis. 


Eupatorium purpureum (15: 452).—Blooms July 17—-Septem- 
ber 3; 20 visitors observed, August 4-September 9; Mas, R. 

Long-tongued Bees (5)—Ap.: Apis fq¢; Bomb.: Bombias auri- 
ecomus §, Bombus impatiens 3, fq; Hucer.: Melissodes agilis @, 
bimaculata 9. 

Other Hymenoptera (2)—Sphec.: Sphex procera; Vesp.: 
Polistes rubiginosus. 

Diptera (3)—Syrph.: Volucella vesiculosa f; Bombyla.: Exopro- 
sopa fasciata, Systoechus. 

Lepidoptera (10)—Nymphal.: Anosia, Charidryas, Vanessa 
huntera; Papilion.: Eurymus, Jasoniades, Laertias, Pieris, Pontia; 
Hesperi.: Pholisora hayhurstii, Polites. 


Eupatorium serotinum (15: 452-3).—Blooms August 2—Octo- 
ber 6; 132 visitors observed, August 14-September 19; Mis, W. 

Long-tongued Bees (21)—Ap.: Apis se, ab; Bomb.: Bombias 
scutellaris ¢ 9, se, separatus ¢, Bombus americanorum ¢ 9, con- 
similis 9, se, impatiens ¢ 9, se, fq, Psithyrus variabilis ¢'; Mega- 
chil.: Trypetini: Neotrypetes truncatus ¢' 9, se, fq; Megachilini: 
Megachile brevis ¢ 9, mendica 9, se, Xanthosarus 2; Coelioxyini: 
Coelioxys 8-dentata 3%, sayi 3; Epeol.: Epeolus bifasciatus 9, Tri- 
epeolus cressonii ¢' ?, lunatus 9, pectoralis ¢'; Eucer.: Melissodes 
autumnalis ¢' 2, boltoniae 9, sc, nivea 9, se, simillima . 

Short-tongued Bees (11)—Halict.: Agapostemon radiatus Q, 
viridulus <4, fq, Chloralictus sparsus <4, fq, zephyrus ¢, Curtisapis 
coriacea ¢ 9, sc, Evylaeus pectoralis 3, Odontalictus ¢ 9, Oxysto- 
glossa confusa 9; Sphecodini: Sphecodium pimpinellae ¢'; Collet.: 
Colletes compactus ¢ 9, eulophi ¢' 9, se, fq. 

Other Hymenoptera (44)—Sphec.: Isodontia apicalis, macro- 
cephala, Sceliphron, Sphex gracilis, nigricans fq, pictipennis, pro- 
cera, vulgaris; Bembic.: Bicyrtes 4-fasciata; Scoli.: Elis 5-cincta, 
Scolia bicineta; Philanth.: Cerceris fulvipes fq, prominens, Eucer- 
ceris, Philanthus punctatus, ventilabris; Vesp.: Polistes annularis, 
pallipes, rubiginosus, variatus, Vespula germanica; Eumen.: Ancis- 
trocerus campestris, capra, tigris, Eumenes fraternus, Leionotus 


CHARLES ROBERTSON 73 


arvensis, dorsalis, foraminatus, scrophulariae, Monobia; Crabron.: 
Hypocrabro, Protothyreopus bigeminus, Pseudocrabro, Syno- 
thyreopus; Larr.: Larropsis ab; Pompil.: Anoplius illinoensis, 
Pompiloides marginatus; Tiphi.: Tiphia robertsoni; Chrysid.: 
Gonochrysis, Hedychrum violaceum, wiltii; Ichnewmon.: Cerato- 
soma, Porizon albipennis; Bracon.: Toxoneuron viator. 

Diptera (34)—Taban.: Chrysops striatus; Syrph.: Chilosia 
punctulata, Eristalis tenax, Milesia, Orthoneura nitida, Spilomyia 
longicornis; Bombyli.: Anthrax alternata, Exoprosopa fasciata, 
fascipennis, Geron rufipes, Sparnopolius, Systoechus, Systropus; 
Conop.: Conops xanthopareus, Physocephala texana, tibialis, Stylo- 
gaster biannulata; Tachin.: Archytas aterrima, Belvosia bifasciata, 
Cistogaster oeccidua, Euphorocera claripennis, Gymnosoma, Leskia, 
Ennyomma nigrifrons, Neofischeria, Ocyptera tenuis, Siphoplagia 
anomala, Spallanzania, Trichopoda pennipes, Xanthomelana; 
Sarcophag.: Helicobia helicis; Musc.: Compsomyia, Musca, Pseudo- 
pyrellia. 

Lepidoptera (15)—Nymphal.: Argynnis, Phyciodes, Vanessa 
eardui; Lycaen.: Chrysophanus, Everes; Papilion.: Eurymus, 
Pieris, Pontia; Hesperi.: Atalopedes, Epargyreus, Limochores tau- 
mas fq; Ctenuch.: Scepsis; Noctu.: Feltia, Spragueia; Sesi.: Car- 
menta. 

Coleoptera (6)—Cerambyc. (f, n): Cyllene decorus, robiniae ; 
Chrysomel.: Diabrotica 12-punctata; Lampyr.: Chauliognathus 
pennsylvanicus; Rhipiphor.: Rhipiphorus limbatus; Scarabae.: 
Euphoria sepulchralis. 

Hemiptera (1)—Pentatom.: Euschistus variolarius. 


Eupatorium sessilifolium.—Blooms August 2—September 11; 
8 visitors observed, August 25, September 11; Mis, W. 

Other Hymenoptera (6)—Sphec.: Sphex procera; Scoli.: Seolia 
bicineta ; Philanth.: Philanthus punctatus fq; Vesp.: Polistes rubig- 
inosus; Eumen.: Eumenes fraternus, Monobia. 

Diptera (1)—Tachin.: Archytas analis. 

Lepidoptera (1)—Lycaen.: Everes. 


Eupatorium urticaefolium (15:453).—Blooms July 31-—Octo- 
ber 13; 23 visitors observed, September 2—17; Mis, W. 

Long-tongued Bees (3)—Ap.: Apis se, ab; Megachil.: Megachile 
mendica 9, se, Xanthosarus 9, e¢. 

Short-tongued Bees (4)—Jalict.: Chloralictus sparsus 2, Odon- 
talictus ¢ 2, se, fq, Oxystoglossa confusa 9, Seladonia ¢. 

Other Hymenoptera (5)—Scoli.: Seolia bicincta; Vesp.: Ves- 
pula germanica, maculata; Eumen.: Ancistrocerus tigris; Larr.: 
Larropsis. 


74 FLOWERS AND INSECTS—XXVI 


Diptera (9)—Syrph.: Allograpta, Rhingia, Spilomyia longi- 
cornis, Syrphus ribesii; Bombylt.: Exoprosopa fasciata; Tachin.: 
Cistogaster occidua, Paradidyma; Dezv.: Ptilodexia; Musc.: Pseu- 
dopyrellia. 

Lepidoptera (2)—Lycaen.: Cyaniris; Ctenuch.: Scepsis. 


Gnaphalium polycephalum.—Blooms August 8—October 17; 70 
species and 196 individuals observed, September 20-29; Mis, W. 

Long-tongued Bees (1:1)—Ap.: Apis 1. 

Short-tongued Bees (13: 64)—Halict.: Augochlora viridula 9, 
1, Chloralictus obscurus ¢, 4, pilosus 9, 1, sparsus 9, 3, versatus 
3 9, 15, Odontalictus J 2, se, 11, Oxystoglossa confusa 9, 1, similis 
3 &, 8, Paralictus platyparius ¢' 9, 9, Seladonia 9, 2; Prosopid.: 
Prosopis ziziae 9, 2; Collet.: Colletes americanus ¢ 2, 3; Andren.: 
Pterandrena solidaginis ¢ 9, 4. 

Other Hymenoptera (30: 63)—Sphec.: Sphex gracilis 1, picti- 
pennis 1, vulgaris 1; Philanth.: Cerceris clypeata 1, compacta 1, 
finitima 3, fulvipes 1; Vesp.: Polistes annularis 2, pallipes 1; 
Eumen.: Leionotus anormis 1, arvensis 1, clypeatus 17, histrionalis 
3, illinoensis 1, molestus 1; Crabron.: Ectemnius 1, Solenius 2, 
Xestocrabro texanus 2, trifasciatus 1; Oxybel.: Notoglossa fron- 
talis 1; Larr.: Larropsis 1; Pompil.: Lophopompilus philadelphicus 
2, Pompiloides americanus 3, marginatus 1, subviolaceus 2; 
Chrysid.: Gonochrysis 1, Holopyga 3, Tetrachrysis venusta 2; 
Ichneumon.: Metopius polycinctorius 3; Bracon.: Chelonus 2. 

Diptera (22: 54)—Syrph.: Paragus tibialis 1, Syritta 1; Conop.: 
Oncomyia 1; Tachin.: Distichona varia 3, Euphorocera claripennis 
1, Frontina archippivora 1, Gymnosoma 1, Hypostena barbata 1, 
Ocyptera lata 1, Pachyophthalmus signatus 2, Paradidyma 1, Seno- 
tainia rubriventris 1, Siphoplagia anomala 1, Spallanzania 3, Stur- 
mia phyciodis 2, Trichophora 2; Sarcophag.: Helicobia helicis 20, 
Sarcophaga cimbicis 1; Musc.: Compsomyia 1, Lucilia caesar 2, 
Musea 1, Pseudopyrellia 6. 

Lepidoptera (3:9)—Nymphal.: Phyciodes 3; Hesperi.: Atalo- 
pedes 3; Ctenuch.: Scepsis 3. 

Coleoptera (1:5)—Lampyr.: Chauliognathus pennsylvanicus 5. 


Helenium autumnale (15:474-5).—Blooms August 16-Octo- 
ber 22; 35 visitors observed, September 15-23; Mas, Y. 

Long-tongued Bees (15)—Ap.: Apis sc; Bomb.: Bombias scu- 
tellaris ¢, separatus 9, Bombus americanorum ¢ 9, fq, impatiens 
3& ¥, ab; Megachil. (2) : Megachilini: Megachile brevis se, ab, men- 
dica se, Xanthosarus; Coelioxyini: Coelioxys 8-dentata; Epeol.: 


CHARLES ROBERTSON 75 


Triepeolus cressonii 9, ab; Lucer.: Epimelissodes obliqua ?, Melis- 
sodes agilis ¢, boltoniae 2, se, ab, simillima 9, se, type, trinodis 2, se. 

Short-tongued Bees (3)—Halict.: Agapostemon viridulus d, 
Seladonia 9, se; Collet.: Colletes compactus Q, se. 

Other Hymenoptera (7)—Sphec.: Priononyx atrata, Sphex 
nigricans, procera; Bembic.: Bembix spinolae, Bicyrtes ventralis 
fq; Vesp.: Polistes variatus, Vespula germanica. 

Diptera (4)—Syrph.: Syrphus arcuatus; Bombyli.: Anthrax 
haleyon, Sparnopolius. 

Lepidoptera (4)—Nymphal.: Phyciodes; Papilion.: Eurymus; 
Hesperi.: Limochores taumas; Ctenuch.: Scepsis. 

Coleoptera (2)—Lampyr.: Chauliognathus pennsylvanicus ab; 
Melo.: Epicauta pennsylvanica f, n. 

Hemiptera (1)—Pentatom.: Euschistus fissilis. 


Helianthus annuus (cult).—Blooms July 10-September 11; 42 
species and 434 individuals observed, July 11-September 6; Mas, Y. 

Long-tongued Bees (19: 311)—Ap.: Apis se, 65; Bomb.: Bom- 
bias separatus 4’, 12, Bombus americanorus ¢ 9 Y, se, 117, con- 
similis %, 2, impatiens ¢ Y, se, 26, ridingsii ¢, 5, Psithyrus varia- 
bilis ¢ 2, 8; Ceratin.: Ceratina 9, se, 1; Megachil. (2) : Megachile 
mendica se, 1, Sayapis sayi 1, Xanthosarus 1; Epeol.: Triepeolus 
concavus 9, 1; Eucer.: Epimelissodes obliqua ¢ 9, se, 6, Melissodes 
agilis ¢ 9, se, 50, autumnalis 9, 1, bimaculata ¢ 9, 2, boltoniae 
3 9, se, 6, coloradensis 9, se, 2, trinodis ¢ 9, se, 4. 

Short-tongued Bees (9:69)—Halict.: Agapostemon viridulus 
& 9, 11, Chloralictus pilosus 9, ¢, 1, sparsus 9, ¢, 1, versatus 9, 
ce, 2, Odontalictus ¢ 9, se, 50, Oxystoglossa confusa 9, 1, Seladonia 
3,1; Andren.: Pterandrena helianthi ¢, 1, pulchella 9, 1. 

Diptera (5:36)—Syrph.: Eristalis brousi 1, transversus 1, 
Syritta f, 1, n; Bombyli.: Anthrax alternata f, 1, n, Sparnopol- 
ius 32. 

Lepidoptera (4:10)—Nymphal.: <Anosia 1, Argynnis 3; 
Papilion.: Pieris 2; Hesperi.: Limochores taumas 4. 

Coleoptera (4:5)—Chrysomel. (f, n): Diabrotica 12-punctata 
1, longicornis 1, vittata 1; Lampyr.: Chauliognathus pennsyl- 
vanicus 2. 

Hemiptera (1:3)—Caps.: Lygus 3. 


Helianthus divaricatus (10: 244-5).—Blooms July 22-Septem- 
ber 15; 75 visitors observed, July 22-September 19; Mas, Y. 

Long-tongued Bees (38)—Ap.: Apis; Bomb.: Bombias scutel- 
laris Y, sc, separatus ¢, Bombus americanorum ¢ 9%, ab; Ceratin.: 


76 FLOWERS AND INSECTS—XXVI 


Ceratina ¢ 9, se; Megachil.: Trypetini: Neotrypetes truncatus 9, 
se; Osmiini: Ashmeadiella 9, se; Megachilini: Megachile brevis 9, 
mendica <7, petulans ¢ 9, se, fq, 6-dentata 9, sc, Sayapis pugnata. 
2, se, sayi 2, se, fq, Xanthosarus 9, se; Coelioxyini: Coelioxys alter- 
nata 9, germana J 9, 8-dentata 0, sayi J; Epeol.: Epeolus autumn- 
alis ¢, fq, bifasciatus J, pusillus 3, Triepeolus concavus ¢ 9, con- 
color ¢ 9, fq, cressonii ¢ 9, fq, donatus J 9, fq, lunatus 9, neva- 
densis 9, remigatus (4, simplex 9; Hucer.: Epimelissodes obliqua 
& &, se, ab, Melissodes agilis ¢ 9, se, autumnalis ¢' 2, se, fg, bol- 
toniae 9, se, coloradensis ¢ 9, sc, fq, nivea J, fq, simillima 7, 
trinodis ¢ 9, se, fq, vernoniana J . 

Short-tongued Bees (15)—Halict.: Chloralictus illinoensis J, 
pilosus ¢ 9, se, versatus 4, Evylaeus pectoralis 9, ¢, fq, Odontalictus 
3 &, se, fq, Oxystoglossa confusa J 9, se, fq; Collet.: Colletes ameri- 
canus ¢ 9; Dufoure.: Halictoides ¢ 9, se, fq; Andren.: Pterandrena 
helianthi ¢, pulchella ¢ 9, se, fq; Panurg.: Pseudopanurgus albi- 
tarsis ¢ 9, se, fq, labrosiformis ¢ 9, se, fq, labrosus ¢ 9, se, faq, 
rudbeckiae ¢, rugosus 3 9, se, fq. 

Other Hymenoptera (4)—Sphec.: Sphex nigricans; Bembic.: 
Stictiella; Huwmen.: Leionotus arvensis; Cercer.: Cerceris rufinoda. 

Diptera (13)—Syrph.: Eristalis transversus, Milesia f, n; 
Bombyli.: Anthrax alternata f, n, haleyon, palliata, Exoprosopa 
decora, Geron rufipes, Sparnopolius ab, Systoechus; Conop.: 
Zodion fulvifrons fq, Robertsonomyia fq, in cop; Anthomy.: 
Proboscimyia; Agromyz.: Eusiphona. 

Lepidoptera (4)—Nymphal.: Charidryas ; Papilion.: Callidryas, 
Eurymus; Hesperi.: Limochores taumas. 

Coleoptera (1)—Lampyr.: Chauliognathus pennsylvanicus fq. 

August 27 the following 16 species and 55 individuals were 
taken on the flowers: 

Long-tongued Bees (8:33)—Ap.: Apis 1; Bomb.: Bombus 
americanorum 11; Megachil.: Xanthosarus 4; Epeol.: Triepeolus 
concavus 1; Eucer.: Epimelissodes obliqua 11, Melissodes agilis 2, 
eoloradensis 1, trinodis 2. 

Short-tongued Bees (2:2)—Halict.: Chloralictus pilosus 1, 
Odontalictus 1. 

Other Hymenoptera (1: 1)—Sphec.: Sphex nigricans 1. 

Diptera (2: 8)—Bombyli.: Sparnopolius 5, Systoechus 3. 

Lepidoptera (2:4)—Papilion.: Eurymus 2; Hesperi.: Limo- 
chores taumas 2. 

Coleoptera (1: 7)—Lampyr.: Chauliognathus pennsylvanicus 7. 


Helianthus grosse-serratus (15: 469-70).—Blooms August 19- 
October 15; 72 visitors observed, August 27—October 15; Mas, Y. 


CHARLES ROBERTSON 77 

Long-tongued Bees (29)—Ap.: Apis ab; Bomb.: Bombias auri- 
comus ¢ ¥, scutellaris ¢ 9, fq, separatus ¢ %, Bombus american- 
orum ¢ 9%, ab, consimilis 4, impatiens 2 9%, Psithyrus variabilis 
o 2, fq; Megachil.: Megachilini: Megachile brevis ¢ 9, se, generosa 
9, Sayapis sayi 9, se, Xanthosarus ¢ 2, se, ab; Coelioxyini: Coeli- 
oxys rufitarsis 9, fq; Nomad.: Holonomada vincta ¢ 9, fq; Epeol.: 
Triepeolus concavus 9, fq, eressonii 9, fq, donatus ¢ 9, helianthi 
od 9, ab, type; Eucer.: Epimelissodes obliqua ¢ 2, se, fq, Melissodes 
agilis ¢ 9, sc, ab, autumnalis ¢ 9, se, fq, bimaculata 9, se, boltoniae 
9, se, fq, coloradensis 9°, sc, fq, nivea ¢ 9, pallida 9, type, simillima 
d, trinodis ¢ 2, se, fq, type; Anthophor.: Amegilla 9. 

Short-tongued Bees (9)—Halict.: Agapostemon radiatus ¢ 9, 
se, texanus ¢, viridulus ¢, Chloralictus versatus ?, c, Odontalictus 
o 2, se, fq; Andren. (% 9, se, ab): Pterandrena helianthi, type, 
pulchella; Panurg.: Pseudopanurgus solidaginis ¢ 9, se, fq; 
Dufoure.: Halictoides ¢ 9, se, fq. 

Other Hymenoptera (3)—Sphec.: Priononyx atrata; Bembic.: 
Bembix nubillipennis, spinolae. 

Diptera (14)—Syrph.: Eristalis latifrons ab, tenax, transversus 
ab, Helophilus latifrons, similis, Syrphus americanus, ribesii; 
Bombyli.: Exoprosopa decora, Sparnopolius ab, Systoechus fq; 
Conop.: Robertsonomyia; Tachin.: Macquartia; Musc.: Pseudo- 
pyrellia; Anthomy.: Proboscimyia fq. 

Lepidoptera (13)—Nymphal.: Anosia fq, Argynnis, Euptoieta, 
Speyeria, Vanessa cardui fq, huntera; Papilion.: Eurymus, Laertias, 
Zerene; Hesperi.: Hesperia; Arcti.: Utetheisa; Clenuch.: Scepsis; 
Noctu.: Plusia simplex. 

Coleoptera (3)—Chrysomel. (f, n): Diabrotica 12-punctata, 
longicornis ; Lampyr.: Chauliognathus pennsylvanicus. 

Hemiptera (1)—Phymat.: Phymata, pred. 


Helianthus laetiflorus—Blooms August 1-September 15; 26 
visitors observed, August 19, 20, 28; Mas, Y. 

Long-tongued Bees (9)—Bomb.: Bombias scutellaris %, sepa- 
ratus ¢, Bombus americanorum %; Megachil.: Megachile brevis ¢, 
Sayapis sayi 9, sc, Xanthosarus ¢; Epeol.: Triepeolus concavus 
do 2; Eucer.: Epimelissodes obliqua ¢ 9, sc, Melissodes agilis ¢ 9. 

Short-tongued Bees (4, 9, se)—Halict.: Chloralictus pilosus, 
versatus, Evylaeus pectoralis, Odontalictus ab. 

Other Hymenoptera (2)—Sphec.: Sphex nigricans; Ichneumon.: 
Ceratosoma. 

Diptera (6)—Syrph.: Eristalis latifrons sf, transversus f; 
Bombyli.: Exoprosopa fasciata, Sparnopolius ab, Systoechus; 
Tachin.: Siphoplagia anomala. 


78 FLOWERS AND INSECTS—XXVI 


Lepidoptera (3)—Nymphal.: Phyciodes; Hesperi.: Pholisora 
eatullus; Ctenuch.: Scepsis. 
Hemiptera (2)—Caps.: Calocoris, Lygus. 


Helianthus mollis (15:469).—Blooms July 9-September 25; 
27 visitors observed, July 29—August 23; Mas, Y. 

Long-tongued Bees (12)—Bomb.: Bombus americanorum ¢ 9, 
fq; Megachil.: Megachilini: Megachile brevis 3’, petulans 9, 6-den- 
tata 9, Xanthosarus 0 9, se; Coelioxyini: Coelioxys 8-dentata ¢'; 
Epeol.: Triepeolus concavus 9, cressonii 2; Hucer.: Epimelissodes 
obliqua ¢ 9, se, fq, Melissodes agilis 3 9, se, coloradensis J, trinodis 
0) se. 

Short-tongued Bees (7)—Halict.: Agapostemon viridulus 2, 
Chloralictus pilosus 9, se, versatus 2, se, Odontalictus 9, se, faq, 
Oxystoglossa similis 9, sec; Panurg. (¢ 9, sc): Pseudopanurgus 
albitarsis in cop, rugosus. 

Diptera (6)—Syrph.: Eristalis latifrons, Tropidia mamillata; 
Bombyls.: Anthrax halcyon, Exoprosopa decora, Systoechus fq. 

Lepidoptera (2)—Nymphal.: Phyciodes; Papilion: Eurymus. 


Helianthus scaberrimus.—Blooms August 2—September 9; 12 
visitors observed, August 9-September 9; Mas, Y. 

Long-tongued Bees (5)—Bomb.: Bombus. americanorum §; 
Megachil.: Xanthosarus 2; Hucer.: Epimelissodes obliqua ¢ 9, 
Melissodes agilis , sc, coloradensis 9, se. 

Short-tongued Bees (3)—Dufoure.: Halictoides 9, se; Andren.: 
Pterandrena helianthi ¢ 9, se, fq, pulchella 9, se, type. 

Diptera (2)—Syrph.: Eristalis transversus; Bombylt.: Sparno- 
polius. 

Coleoptera (1)—ZLampyr.: Chauliognathus pennsylvanicus. 

Hemiptera (1)—Caps.: Calocoris. 


Helianthus strumosus (15:470).—Blooms July 6—September 
7; 14 visitors observed, August 22, 24; Mas, Y. 

‘ Long-tongued Bees (6)—Bomb.: Bombias separatus ¢'; Ceratin.: 
Ceratina 9; Megachil.: Megachile petulans ¢; Epeol.: Triepeolus 
concavus 9, cressonii ¢'; Hucer.: Epimelissodes obliqua ¢ 9, se, fq. 

Short-tongued Bees (2, 9)—Andren.: Pterandrena pulchella fq; 
Panurg.: Pseudopanurgus labrosiformis. 

Other Hymenoptera (1)—Sphec.: Sphex nigricans. 

Diptera (3)—Bombyli.: Anthrax haleyon, Sparnopolius, Sys- 
toechus. 

Lepidoptera (2)—Nymphal.: Charidryas; Papilion.: Eurymus. 


Helianthus tuberosus (15:471).—Blooms July 15—-September 
28; 53 visitors observed, August 13-September 28; Mas, Y. . 


CHARLES ROBERTSON 79 


Long-tongued Bees (17)—Bomb.: Bombias auricomus 9, sepa- 
ratus ¢ 9, Bombus americanorum ¢ &, se, fq, consimilis ¢; 
Megachil. (2): Megachile brevis, Sayapis sayi, sc, Xanthosarus; 
Nomad.: Holonomada vincta 9; Epeol.: Epeolus autumnalis ¢ 9, 
Triepeolus concavus 9, concolor 2; Eucer.: Epimelissodes obliqua 
©, se, ab, Melissodes agilis ¢ 2, se, fq, bimaculata ?, coloradensis 
Jo 9, se, fq, simillima ¢, trinodis J 2, fq. 

Short-tongued Bees (15)—Halict. (2): Chloralictus pilosus, 
. parsus, ¢, n, zephyrus c, Curtisapis coriacea sc, Evylaeus pectinatus 
type, Odontalictus sc; Collet.: Colletes compactus 9, se; Dufoure.: 
Halictoides, 2; Andren.: Pterandrena aliciae 9, sc, helianthi 9, pul- 
chella ¢ 9, se, ab; Panurg.: Pseudopanurgus labrosiformis ¢ 9, se, 
fq, labrosus ¢ 2, se, ab, in cop, type, rugosus ¢ 9, se, ab, in cop, 
solidaginis ¢. 

Other Hymenoptera (3)—Scoli.: Scolia bicineta; Philanth.: 
Cerceris kennicottii; Crabron.: Protothyreopus bigeminus. 

Diptera (9)—Syrph.: Eristalis tenax fs, transversus; Bombyli.: 
Anthrax haleyon fq, Exoprosopa decora, fascipennis fq, Sparno- 
polius ab, Systoechus fq; Musc.: Pseudopyrellia; Trypet.: Trypeta 
finalis n. 

Lepidoptera (4)—Nymphal.: Phyciodes; Lycaen.: Eupsyche ; 
Papilion.: Eurymus; Hesperi.: Pholisora catullus. 

Coleoptera (4)—Chrysomel.: Diabrotica longicornis f, n; 
Lampyr.: Chauliognathus pennsylvanicus; Melo.: Epicauta penn- 
sylvanica f, n; Mordell.: Mordella scutellaris f, n. 

Hemiptera (1)—Caps.: Lygus. 


Heliopsis helianthoides (16:177).—Blooms June 22—October 
2; 51 visitors observed, July 1—-October 2; Mas, Y. 

Long-tongued Bees (19)—Bomb.: Bombus americanorum ¢, im- 
patiens 9; Ceratin.: Ceratina 2; Megachil.: Megachilini: Megachile 
brevis 3, fq, 6-dentata ¢; Coelioxyini: Coelioxys germana 4, 8-den- 
tata ¢ 9, sayi ¢; Pasit.: Holcopasites heliopsis ¢, type; Epeol.: 
Epeolus bifasciatus 4, fq, Triepeolus concavus ¢ 9, concolor ¢ 9, 
fq, cressonii ¢, lunatus 9; Eucer.: Epimelissodes obliqua ¢ 9, se, 
Melissodes coloradensis ¢, simillima ¢, trinodis ¢ 9, se, vernon- 
jana ¢. 

Short-tongued Bees (11)—Halict. (2): Chloralictus obscurus, 
pilosus se, pruinosus se, sparsus ¢c, n, Evylaeus pectoralis ¢, n, 
Odontalictus, Oxystoglossa confusa, pura; Andren.: Pterandrena 
aliciae 9; Panurg.: Pseudopanurgus labrosiformis ¢ 2, se, rugosus 
d, fq. 

Other Hymenoptera (4)—Sphec.: Sphex nigricans, vulgaris; 
Bembic.: Bembix spinolae ; Scoli.: Seolia bicincta. 


80 FLOWERS AND INSECTS—XXVI 


Diptera (11)—Syrph.: Eristalis transversus ; Empid.: Parempis 
fq; Bombyli.: Anthrax haleyon, Exoprosopa fasciata, fascipennis, 
Geron calvus fq, rufipes, Sparnopolius, Systoechus; Conop.: Stylo- 
gaster biannulata; Agromyz.: Eusiphona. 

Lepidoptera (4)—Nymphal.: Phyciodes; Lycaen.: Uranotes; 
Papilion.: Pontia; Hespert.: Pholisora catullus. 

Coleoptera (1)—Lampyr.: Chauliognathus pennsylvanicus. 

Hemiptera (1)—Lygae.: Lygaeus. 


Krigia amplexicaulis (15:476).—Blooms May 1-June 19; 68 
visitors observed, May 10—June 15; Mis, Y. 

Long-tongued Bees (17)—Ap.: Apis se, ab; Bomb. (2) : Bombias 
scutellaris, separatus, Bombus americanorum; Ceratin.: Ceratina 
3 9, se, ab; Stelid.: Microstelis ¢'; Megachil.: Osmiini: Alcidamea 
simplex ¢ 9, fq, Gnathosmia 9, sc, Osmia pumila 2; Megachilini: 
Megachile brevis 6; Coelioxyini: Coelioxys 8-dentata J 9; Nomad.: 
Centrias americanus ¢ 9°, fq, Holonomada affabilis ¢ 9, fq, superba 
2, ab, Nomada illinoensis 2; Hpeol.: Epeolus interruptus ¢; Eucer.: 
Tetralonia dilecta ¢ 9, fq. 

Short-tongued Bees (16)—Halict. (2): Agapostemon viridulus 
se, Chloralictus albipennis se, ab, coreopsis sc, pilosus se, ab, ver- 
satus se, ab, Evylaeus pectoralis se, Halictus lerouxii, parallelus, 
Odontalictus sc, ab, Oxystoglossa confusa sc, ab, similis se, ab, 
Seladonia sc; Prosopid.: Prosopis pygmaea ¢ Q, sf, ziziae J, f; 
Collet.: Colletes aestivalis § 9; Andren.: Pterandrena krigiana 
3 2, se, ab, type, oligolege. ; 

Other Hymenoptera (9)—Sphec.: Sphex pictipennis, vulgaris; 
Eumen.: Leionotus anormis ab, clypeatus, foraminatus, histrionalis, 
scrophulariae, ziziae; Crabron.: Solenius. 

Diptera (17)—Syrph.: Eristalis dimidiatus ab, latifrons, tenax, 
transversus, Helophilus latifrons, similis, Mesogramma marginata, 
Sphaerophoria, Tropidia mamillata; Conop.: Oncomyia, Zodion ful- 
vifrons; Tachin.: Cistogaster occidua, pallasii, Ocyptera tenuis; 
Musc.: Lucilia sylvarum, Pseudopyrellia; Anthomy.: Phorbia aera. 

Lepidoptera (5)—Nymphal.: Anosia, Phyciodes; Papilion.: 
Kurymus, Papilio; Hesperi.: Polites. 

Coleoptera (3, f, n)—Chrysomel.: Diabrotica 12-punctata fq; 
Coccinell.: Megilla; Erotyl.: Languria fq. 

Hemiptera (1)—Lygae.: Lygaeus. 

May 18 and 25, the following 33 species and 202 individuals 
were taken on the flowers: 

Long-tongued Bees (5:17)—Ap.: Apis 11; Bomb.: Bombias 
separatus 1, Bombus americanorum 1; Ceratin.: Ceratina 3; Eucer.: 
Tetralonia dilecta 1. 


CHARLES ROBERTSON 81 


Short-tongued Bees (13: 109)—Halict.: Agapostemon viridulus 
3, Chloralictus coreopsis 1, pilosus 18, versatus 32, Evylaeus pec- 
toralis 2, Halictus lerouxii 3, parallelus 1, Odontalictus 10, Oxysto- 
glossa confusa 10, similis 13; Prosopid.: Prosopis pygmaea 1; 
Collet.: Colletes aestivalis 4; Andren.: Pterandrena krigiana 11. 

Diptera (11: 72)—Syrph.: Eristalis dimidiatus 8, latifrons 1, 
Helophilus latifrons 1, similis 1, Mesogramma marginata 34, 
Sphaerophoria 3; Conop.: Oncomyia 2, Zodion fulvifrons 2; 
Tachin.: Cistogaster pallasii 1; Musc.: Lucilia sylvarum 1; 
Anthomy.: Phorbia acra 18. 

Lepidoptera (2: 2)—Nymphal.: Phyciodes 1; Papilion.: Eury- 
mus 1. 

Coleoptera (1:1)—Chrysomel.: Diabrotica 12-punctata 1. 

Hemiptera (1: 1)—Lygae.: Lygaeus 1. 


Lactuca canadensis.—Blooms June 22—September 6; 1 visitor 
observed, August 30; Mas, Y. 
Long-tongued Bees (1)—Megachil.: Xanthosarus Q, se. 


Lactuca floridana.—Blooms July 25—October 6; 15 visitors 
observed, August 17—October 6; Mas, R. 

Long-tongued Bees (8)—Ap.: Apis se, fq; Bomb.: Bombias 
auricomus %, Bombus impatiens 9%, se; Ceratin.: Ceratina 9; 
Megachil.: Megachile brevis ¢ 9, se, Xanthosarus 9; Hucer. (9, se) : 
Epimelissodes obliqua fq, Melissodes boltoniae. 

Short-tongued Bees (6, 2)—Halict.: Chloralictus pilosus ¢, n, 
sparsus ¢, n, Evylaeus pectoralis ce, n, Odontalictus se; Prosopid.: 
Prosopis ziziae, f, n; Collet.: Colletes americanus. 

Coleoptera (1)—Lampyr.: Chauliognathus pennsylvanicus fq. 


Lepachys pinnata (15: 468-9).—Blooms June 19—August 29; 
67 visitors observed, July 1-August 21; Mas, Y. 

Long-tongued Bees (27)—Bomb.: Bombias scutellaris 9; 
Megachil.: Osmiini: Aleidamea simplex 92; Megachilini: Megachile 
brevis ¢, fq, mendica 9, 6-dentata ¢ 9, se, fq, Sayapis pugnata 9, 
sayi ¢ 9, ab, Xanthosarus ¢ 2; Coelioxyini: Coelioxys alternata 
ob 2, modesta 4, 8-dentata ¢ 2; Epeol.: Epeolus bifasciatus ¢, fq, 
Triepeolus concavus ¢ 2, ab, concolor ¢ 9, ab, cressonii ¢ 9, fq, 
lunatus ¢ 9, fq, remigatus ¢ 9, ab; Zucer.: Epimelissodes illinoen- 
sis J 9, se, type, obliqua ¢ 9, sc, ab, Melissodes agilis ¢ 2, fq, 
bimaculata ¢ 2, ab, boltoniae 9, comptoides ¢ 9, nivea 4, simillima 
d, ab, trinodis ¢ 9, se, vernoniana ¢ 9. 

Short-tongued Bees (11)—Halict.: Agapostemon radiatus <j, 
texanus 9, se, Augochlora fervida ¢, Chloralictus albipennis 9, se, 


82 FLOWERS AND INSECTS—XXVI 


pruinosus 6 9, versatus 9, se, Curtisapis forbesii 9, Halictus 
lerouxii 9, se, Odontalictus ¢ 9, se, ab; Andren.: Pterandrena rud- 
beckiae 9, sec; Panurg.: Pseudopanurgus albitarsis 9. 

Other Hymenoptera (16)—Sphec.: Priononyx atrata, thomae, 
Sphex nigricans, pictipennis; Bembic.: Bembix nubillipennis ab, 
spinolae, Bicyrtes ventralis fq, Stictiella fq; Vesp.: Polistes varia- 
tus; Humen.: Leionotus anormis, arvensis, clypeatus, fundatus, 
Pterochilus; Crabron.: Anacrabro, Entomognathus. 

Diptera (8)—Empid.: Parempis; Bombyli.: Exoprosopa decora, 
Geron rufipes, Sparnopolius, Systoechus; Conop.: Zodion oblique- 
fasciatum fq, in cop; Tachin.: Cistogaster occidua; Agromyz.: 
Eusiphona. 

Lepidoptera (3)—Nymphal.: Phyciodes; Lycaen.: Everes, 
Uranotes. 

Coleoptera (2)—Buprest.: Acmaeodera pulchella f, fq; 
Cerambyc.: Typocerus sinuatus f, n. 


Liatris pycnostachya (15: 454).—Blooms July 7—August 23; 
34 visitors observed, July 24-August 10; Mas, R. 

Long-tongued Bees (14)—Ap.: Apis ab; Bomb.: Bombias sepa- 
ratus ¢ 9, fq, Bombus americanorum ¢ Q, se, fg, consimilis 9, 
impatiens 9, sc; Ceratin.: Ceratina 9, fq; Megachil.: Sayapis sayi 
2, se, Xanthosarus ¢ 9, fq; Hpeol.: Triepeolus concavus J 9, con- 
color, 2, remigatus 2; Eucer.: Epimelissodes obliqua ¢ 9, se, faq, 
Melissodes agilis ¢ 2, fq, coloradensis ¢. 

Short-tongued Bees (2)-—Halict.: Agapostemon viridulus ¢ 9, 
se, fq, Odontalictus 9, ¢, fq, n. 

Diptera (6)—Syrph.: Eristalis latifrons, tenax; Bombyli.: 
Exoprosopa fasciata ab, Systoechus; Conop.: Physocephala texana, 
Stylogaster biannulata. 

Lepidoptera (12)—Nymphal.: Anosia, Basilarchia archippus, 
Speyeria; Papilion.: Eurymus fq, Laertias, Papilio, Pieris; 
Hespert.: Epargyreus, Euphyes metacomet, Limochores taumas fq, 
Polites fq; Ctenuch.: Scepsis. 


Liatris scariosa.—Blooms July 27—October 6; 9 species ob- 
served, August 22-September 3; Mas, R. 

Long-tongued Bees (2)—Bomb.: Bombus americanorum ¢ 9; 
Eucer.: Melissodes nivea . 

Other Hymenoptera (1)—Sphec.: Sphex vulgaris. 

Diptera (1)—Bombyli.: Exoprosopa fasciata. 

Lepidoptera (5)—Nymphal.: Anosia; Papilion.: Euphoeades, 
Eurymus, Zerene; Hespert.: Polites. 


CHARLES ROBERTSON 83 


Parthenium integrifolium (15: 464-5).—Blooms June 6—July 
30; 55 visitors observed, June 21, 27, July 11; Mis, W. 

Long-tongued Bees (4)—Ceratin.: Ceratina 9, se; Megachil.: 
Neotrypetes productus <, truncatus 9, sc; Cyphopyga 9, e. 

Short-tongued Bees (7)—JHalict.: Augochlora fervida ?, Chlor- 
alictus pilosus ?, se, versatus ¢ 9, se, ab, Odontalictus 9, Oxystog- 
lossa similis 9, se, fq, Seladonia 9, sc; Prosopid.: Proposis pyg- 
maea . 

Other Hymenoptera (15)—Sphec.: Sphex nigricans; Scoli.: 
Elis 5-cincta; Philanth.: Cerceris compacta, robertsonii; Humen.: 
Leionotus anormis, clypeatus, histrionalis, ziziae; Crabron.: Sol- 
enius; Orybel.: Notoglossa americana, frontalis fq; Chrysid.: Hedy- 
chrum parvum; Bracon.: Agathis vulgaris, Vipio; Tenthredin.: 
Hylotoma humeralis. 

Diptera (20)—Syrph.: Mesogramma geminata, marginata, 
Sphaerophoria, Syritta; Empid.: Parempis; Conop.: Zodion fulvi- 
frons; Tachin.: Cistogaster occidua, Macquartia, Ocyptera tenuis, 
Phorantha purpurascens, Senotainia rubriventris, trilineata fq; 
Sarcophag.: Helicobia helicis, Sarcophaga hunteri; Musc.: Lucilia 
sylvarum, Pseudopyrellia, Stomoxys; Anthomy.: Anthomyiella, 
Calythea ; Agromyz.: Lobioptera. 

Coleoptera (6)—Cerambyc.: Typocerus sinuatus fq ; Chrysomel.: 
Diabrotica atripennis, 12-punctata f; Mordell.: Pentaria; Rhipi- 
phor.: Rhipiphorus limbatus; Scarabae.: Trichius piger sf, fq. 

Hemiptera (3)—Caps.: Calocoris, Lygus fq; Corimelaen.: 
Corimelaena pulicaria. 


Prenanthes aspera.—Blooms August 29-October 6; one visitor 
observed, September 13; Mas, W. 
Long-tongued Bees (1)—Bomb.: Bombus americanorum ¢%. 


Prenanthes crepidinea.—Blooms August 20-September 25; five 
visitors observed, August 25, September 6, 13; Mas, Y. 

Long-tongued Bees (2)——Bomb.: Bombus americanorum 0, im- 
patiens 9, se. 

Short-tongued Bees (1)—Halict.: Oxystoglossa confusa 9, ¢, n. 

Coleoptera (2)—Chrysomel.: Diabrotica longicornis f, fq, n; 
Lampyr.: Chauliognathus pennsylvanicus fq. 


Rudbeckia hirta (15: 466-7).—Blooms June 1—September 16; 
84 visitors observed, June 9—August 22; Mis, Y. 

Long-tongued Bees (14)—Ap.: Apis; Ceratin.: Ceratina 9, se, 
fq; Megachil.: Trypetini: Neotrypetes truncatus 2 se; Megachilini: 
Cyphopyga 9, se, Megachile brevis ¢ 9, 6-dentata 9, sc, Sayapis 


84 FLOWERS AND INSECTS—XXVI 


pugnata ?, sc; Coelioxyini: Coelioxys 8-dentata ¢'; Nomad.: Cen- 
trias americanus ¢ 9; Epeol.: Epeolus interruptus 0, Triepeolus 
concolor 3; Eucer.: Epimelissodes obliqua ¢, Melissodes boltoniae 
©, se, fq, trinodis 9. 

Short-tongued Bees (18)—Halict.: Agapostemon radiatus ¢, 
viridulus 9, se, Chloralictus coreopsis 9, ¢, pilosus ¢ 9, se, pruinosus 
3d, versatus ¢ 92, se, Evylaeus pectoralis ¢' 9, sc, fq, Odontalictus 
9, se, Oxystoglossa confusa 9, sc; Collet.: Colletes eulophi 9, se; 
Andren.: Pterandrena rudbeckiae ¢ 9, se, ab, in cop, type; Panurg. 
(Jb 9, se, ab) : Pseudopanurgus albitarsis in cop, rudbeckiae. 

Other Hymenoptera (7)—Sphec.: Priononyx thomae, Sphex 
nigricans fq, pictipennis; Bembic.: Stictiella; Humen.: Leionotus 
anormis, arvensis; Bracon.: Aenignostomus fq. 

Diptera (31)—Stratiomy.: Odontomyia nigrirostris; Syrph.: 
Allograpta, Eristalis aeneus, dimidiatus, latifrons ab, transversus 
ab, Helophilus latifrons, Mesogramma marginata ab, Paragus 
tibialis sf, Sphaerophoria, Syritta, Tropidia mamillata, Volucella 
fasciata; Empid.: Parempis; Bombyli.: Anthrax parvicornis, 
Exoprosopa decora, emarginata, fascipennis, Geron calvus fq, 
Phthiria cineta fq, sulphurea, Sparnopolius; Conop.: Zodion fulvi- 
frons; Tachin.: Archytas analis, Ocyptera argentea, tenuis ab, Spal- 
lanzania fq, Trichophora; Anthomy.: Coenosia antica, Probos- 
cimyia; Sapromyz.: Sapromyza vulgaris. 

Lepidoptera (12)—Nymphal.: Argynnis, Basilarchia archippus, 
Charidryas, Phyciodes; Lycaen.: Chrysophanus, Thecla calanus; 
Papilion.: Kurymus, Pieris; Hesperi.: Limochores taumas, Polites; 
Ctenuch.: Scepsis; Noctu.: Plusia simplex. 

Coleoptera (6)—Buprest.: Acmaeodera pulchella f; Cerambyc.: 
Typocerus sinuatus sf, fq; Chrysomel.: Diabrotica 12-punctata f; 
Curculion.: Centrinus secutellum-album f; Mordell.: Mordella scutel- 
laris £; Melo.: Macrobasis f. 

Hemiptera (1)—Caps.: Lygus. 


Rudbeckia laciniata (16: 177-8).—Blooms July 17—October 3; 
52 visitors observed, August 13-October 3; Mas, Y. 

Long-tongued Bees (18)—Ap.: Apis sc, ab; Bomb.: Bombias 
scutellaris 9, separatus %, sc, Bombus americanorum ¢ 9%, im- 
patiens ¢' 9, Psithyrus variabilis 2; Ceratin.: Ceratina 9, Zaodon- 
tomerus ¢'; Megachil.: Neotrypetes truncatus ¢; Megachile petulans 
2, se; Epeol.: Epeolus autumnalis § 9, fq, Triepeolus donatus ¢, 
pectoralis ¢ 9, fg; Hucer.: Epimelissodes obliqua 2, se, Melissodes 
autumnalis J, coloradensis J, simillima 4, fq, trinodis ¢ 9, se, fq. 

Short-tongued Bees (8)—Halict.: Chloralictus pilosus 9, Odon- 
talietus ¢' 9, se, fq; Collet.: Colletes compactus ¢ 9, se, fq; Andren.: 


CHARLES ROBERTSON 85 


Pterandrena aliciae ?, se, fq; Panurg.: Pseudopanurgus albitarsis 
3 , se, labrosiformis ¢ 9, sc, fq, rudbeckiae ¢ 2, se, fq, rugosus 9. 
Other Hymenoptera (5)—Sphec.: Sphex gracilis fq, nigricans, 
vulgaris ; Bembic.: Bembix spinolae ; Scoli.: Scolia bicincta. 
Diptera (16)—Syrph.: Eristalis dimidiatus, transversus Syr- 
phus ribesii f, n; Empid.: Parempis fq; Bombyli.: Anthrax alter- 
nata, haleyon, Exoprosopa decora, fasciata, Sparnopolius, Sys- 
toechus; Conop.: Zodion fulvifrons; Tachin.: Archytas aterrima, 
Cyphocera, Peleteria fq, Senotainia trilineata, Spallanzania. 
Lepidoptera (5)—Nymphal.: Charidryas, Vanessa huntera; 
Lycaen.: Cyaniris ; Hesperi.: Limochores taumas ; Clenuch.: Scepsis. 


Rudbeckia subtomentosa.—Blooms July 19-September 16; 97 
visitors observed, July 30-September 2; Mis, Y. 

Long-tongued Bees (13)—Ap.: Apis; Ceratin.: Ceratina 9, se, 
ab ; Megachil.: Megachile brevis ¢ ?, fq, petulans 9, se, fq, 6-dentata 
2, Oligotropus 2, Sayapis sayi 9, se; Epeol.: Epeolus bifasciatus J, 
Triepeolus concolor 9; Hucer.: Epimelissodes illinoensis 9, se, 
obliqua ¢ 9, se, ab, Melissodes simillima 0, trinodis ¢ 9, se, fq. 

Short-tongued Bees (14)—Halict.: Chloralictus albipennis 9, 
se, coreopsis 2, sc, pilosus ¢ 2, sc, ab, sparsus 2, se, fq, versatus 9, 
se, ab, zephyrus 9, Curtisapis coriacea 4, Evylaeus pectoralis ¢ 9, 
se, ab, Halictus parallelus 4, Odontalictus ¢ 9, sc, ab, Seladonia 
Jo 2, se, fq; Panurg.: Pseudopanurgus albitarsis 9, sc, rudbeckiae 
3 &, se, fq, solidaginis ¢ 9, se, ab. 

Other Hymenoptera (16)—Sphec.: Priononyx atrata, thomae, 
Sphex gracilis, nigricans fq, pictipennis fq, vulgaris; Bembic.: 
Bembix nubillipennis, Bicyrtes ventralis ab, Stictiella; Scoli.: Elis 
5-cineta, Scolia bicincta fq; Huwmen.: Leionotus anormis ab, arvensis 
fq, molestus, Pterochilus ; Ichnewmon.: Ceratosoma. 

Diptera (35)—Syrph.: Eristalis latifrons fq, transversus ab, 
Mesogramma geminata, marginata sf, ab, polita, Orthoneura nitida, 
Sphaerophoria, Syritta; Empid: Parempis ab; Bombyli.: Exopro- 
sopa decora, fascipennis fq, Lepidophora, Phthiria aldrichi, cincta 
fq, Sparnopolius ab, Systoechus ab, Toxophora ; Conop.: Oncomyia, 
Zodion obliquefasciatum; Tachin: Cistogaster occidua fq, Epi- 
grimyia floridensis, Leucostoma atra, siphonina, Ocyptera lata, 
tenuis, Peleteria, Phorantha humeralis, purpurascens, Senotainia 
trilineata, Siphona, Siphoplagia anomala ab, Spallanzania ab; 
Musc.: Pseudopyrellia; Agromyz.: Eusiphona ab; Oscin.: Siphon- 
ella cinerea. 

Lepidoptera (12)—Nymphal.: Basilarchia archippus, Chari- 
dryas, Phyciodes ab; Lycaen.: Chrysophanus, Cyaniris, Everes, 


86 FLOWERS AND INSECTS—XXVI 


Uranotes; Papilion.: Eurymus, Pontia; Hesperi.: Hesperia, Limo- 
chores taumas; Ctenuch.: Scepsis. 

Coleoptera (3)—Cerambyc.: Batyle f£; Curculion.: Centrinus 
scutellum-album f; Lampyr.: Chauliognathus pennsylvanicus. 

Hemiptera (4)—Caps.: Calocoris, Lygus; Pentatom.: Euschistus 
ictericus; Beryt.: Harmostes. 

The following 76 species and 669 individuals were taken on the 
flowers, July 30—-August 27, 1909: 

Long-tongued Bees (11: 44)—Ap.: Apis 1; Ceratin.: Ceratina 
11; Megachil: Megachile brevis 2, petulans 5, Oligotropus 1, Say- 
apis sayi 1; E'peol.: Epeolus bifasciatus 1; Triepeolus concolor 1; 
Eucer.: Epimelissodes illinoensis 1, obliqua 15, Melissodes 
trinodis 5. 

Short-tongued Bees (13:271)—Halict.: Chloralictus  albi- 
pennis 1, coreopsis 1, pilosus 99, sparsus 7, versatus 56, zephyrus 
1, Curtisapis coriacea 1, Evylaeus pectoralis 28, Halictus paral- 
lelus 1, Odontalictus 69, Seladonia 5; Panurg.: Pseudopanurgus 
albitarsis 1, solidaginis 1. 

Other Hymenoptera (12:59)—Sphec.: Priononyx atrata 2, 
Sphex gracilis 1, nigricans 6, pictipennis 1; Bembic.: Bembix 
nubillipennis 1, Bicyrtes ventralis 21, Stictiella 1; Scoli.: Elis 5- 
cincta 3, Scolia bicincta 6; Humen.: Leionotus anormis 9, arvensis 
7, molestus 1. . 

Diptera (28:247)—Syrph.: Eristalis latifrons 2, transversus 
20, Mesogramma geminata 2, marginata 8, polita 2, Orthoneura 
nitida 2, Syritta 1; Hmpid.: Parempis 12; Bombyli.: Exoprosopa 
decora 1, fascipennis 6, Lepidophora 2, Phthiria aldrichi 5, cincta 
5, Sparnopolius 33, Systoechus 6, Toxophora 1; Conop.: Zodion 
obliquefasciatum 1; Tachin.: Cistogaster occidua 1, Epigrimyia 
floridensis 1, Ocyptera tenuis 5, Peleteria 2, Phorantha humeralis 1, 
Senotainia trilineata 2, Siphona 1, Siphoplagia anomala 49, Spall- 
anzania 57; Musc.: Pseudopyrellia 1; Agromyz.: Eusiphona 18. 

Lepidoptera (9:41)—Nymphal.: Basilarchia archippus 2, 
Charidryas 1, Phyciodes 32; Lycaen.: Chrysophanus 1, Everes 1; 
Papilion.: Eurymus 1, Pontia 1; Hesperi.: Limochores taumas 1; 
Ctenuch.: Seepsis 1. 

Coleoptera (3:7)—Cerambyc.: Batyle 2; Curculion.: Centrinus 
scutellum-album 3; Lampyr.: Chauliognathus pennsylvanicus 2. 


Rudbeckia triloba (15: 467-8).—Blooms July 19-October 26; 
107 visitors observed, July 23—October 1; Mas, Y. 

Long-tongued Bees (23)—Ap.: Apis se; Bomb.: Bombias auri- 
comus 6, scutellaris 9, separatus ¢ 9 %, fq; Ceratin.: Ceratina 9, 
se, ab; Stelid.: Stelidium 6; Megachil.: Trypetini: Neotrypetes 


CHARLES ROBERTSON 87 


truncatus ¢' 9; Megachilini: Megachile brevis 4, petulans d', Sayapis 
sayi 2, sc; Coelioxyini: Coelioxys alternata ¢ 2, 8-dentata 9°, sayi 
¢; Epeol.: Triepeolus concolor 9, cressonii ¢ 2, fq, helianthi ¢; 
Eucer.: Epimelissodes obliqua ¢ 9, se, ab, Melissodes agilis ¢ 9, 
fq, bimaculata ¢ 9, boltoniae 2, ¢, simillima 4, trinodis ¢ 9, se, 
fq, vernoniana ¢ 9. 

Short-tongued Bees (25)—Halict.: Agapostemon radiatus 0, 
Chloralictus pilosus ¢ 9, se, fq, sparsus 9, se, versatus 4 9, se, 
zephyrus ¢ 9, Curtisapis coriacea ¢ 2, Evylaeus pectoralis 9, se, 
ab, Halictus lerouxii 2, Odontalictus ¢ 9, se, ab, Oxystoglossa con- 
fusa 9, sc, pura 9, sc, similis 9, se, Seladonia ¢ 9; Collet.: Colletes 
americanys 9, sc, compactus 9, sc; Andren.: Pterandrena aliciae 
& 2, se, fq, rudbeckiae 9, se; Panurg.: Calliopsis andreniformis ¢, 
coloradensis ¢ 9, sc, Pseudopanurgus asteris 9, sc, compositarum ¢, 
labrosiformis 9, se, labrosus ¢ 9, se, ab, rudbeckiae ¢ 9, se, ab, 
in cop, type, rugosus ¢ Q, se. 

Other Hymenoptera (12)—Sphec.: Sphex gracilis, nigricans; 
Bembic.: Bembix spinolae, Bicyrtes ventralis, Stictiella; Scoli.: 
Elis interrupta, 5-cincta, Scolia bicincta; Vesp.: Polistes variatus; 
Eumen.: Leionotus arvensis; Ozybel.: Notoglossa americana; 
Ichneumon.: Exetastes suaveolens. 

Diptera (37)—Syrph.: Eristalis latifrons, transversus fq, Mal- 
lota cimbiciformis, Spilomyia longicornis, Volucella fasciata; 
Empid.: Parempis fq; Bombyli.: Anthrax fulvohirta, haleyon fq, 
Argyramoeba oedipus f, n, Exoprosopa decora, fasciata, fascipennis, 
Geron rufipes, Lepidophora, Phthiria cincta, Sparnopolius fq, Sys- 
toechus, Systropus, Toxophora; Conop.: Conops brachyrrhynchus, 
Onecomyia, Zodion obliquefasciatum; Tachin.: Apinops, Archytas 
analis, Cistogaster occidua, Epigrimyia geniculata ab, illinoensis 
type, Leskiomima secunda, Ocyptera tenuis, Peleteria fq; Senotainia 
trilineata, Siphoplagia anomala ab, Spallanzania, Trichophora ; 
Dezxi.: Ptilodexia; Musc.: Pseudopyrellia; Agromyz.: Eusiphona. 

Lepidoptera (7)—Nymphal.: Basilarchia archippus, Charidryas 
fq, Phyciodes fq; Lycaen.: Everes; Papilion.: Eurymus, Pontia; 
Hesperi.: Polites. 

Coleoptera (3)—Lampyr.: Chauliognathus pennsylvanicus ab; 
Melo.: Epicauta pennsylvanica f, n; Mordell.: Mordella margi- 
nata f, n. 

The following 23 visitors and 138 individuals were taken on the 
flowers on August 20, 24: 

Long-tongued Bees (5:7)—Bomb.: Bombias auricomus 1; 
Ceratin.: Ceratina 1; Megdchil.: Megachile petulans 1; Eucer.: 
Epimelissodes obliqua 2, Melissodes boltoniae 2. 


88 FLOWERS AND INSECTS—XXVI 


Short-tongued Bees (6:44)—AHalict.: Chloralictus pilosus 2, 
versatus 1, Evylaeus pectoralis 2, Odontalictus 36, Oxystoglossa 
similis 1; Panurg.: Pseudopanurgus rudbeckiae 2. 

Other Hymenoptera (2: 3)—Sphec.: Sphex nigricans 1; Humen.: 
Leionotus arvensis 2. 

Diptera (6:34)—Syrph.: Eristalis transversus 6; Bombylt.: 
Sparnopolius 3, Systoechus 1; Yachin.: Cistogaster occidua 1, 
Siphoplagia anomala 22; Musc.: Pseudopyrellia 1. 

Lepidoptera (2:7)—Nymphal.: Basilarchia archippus 1, 
Phyciodes 6. 

Coleoptera (2:43)—Lampyr.: Chauliognathus pennsylvanicus 
42; Epicauta pennsylvanica 1. 


Senecio aureus.—Blooms May 7—June 5; 18 visitors observed 
on May 15, June 2; Mis, Y. 

Long-tongued Bees (4)—Ceratin.: Ceratina ¢; Nomad.: Cen- 
trias americanus <, Holonomada superba ¢ 9, fq; Eucer.: Tetra- 
lonia dilecta 3, fq. 

Short-tongued Bees (5, 2)—Halict.: Chloralictus pilosus se, ab, 
pruinosus se, Odontalictus se, ab, Oxystoglossa confusa, se, similis. 

Other Hymenoptera (1)—KHumen.: Leionotus elypeatus. 

Diptera (8)—Syrph.: Eristalis latifrons, Mesogramma margi- 
nata, Sphaerophoria, Tropidia mamillata; Conop.: Zodion fulvi- 
frons; Tachin.: Cistogaster occidua, Epigrimyia floridensis fq, 
Peleteria. 


Silphium integrifolium (15: 463).—Blooms June 10-September 
20; 24 visitors observed, July 7-September 16; Mas, Y. 

Long-tongued Bees (18)—Ap.: Apis se; Bomb.: Bombus con- 
similis $, impatiens 9; Ceratin.: Ceratina 9, fq; Megachil.: Cypho- 
pyga 63, Megachile brevis 3, mendica 2, petulans 4, Sayapis pol- 
licaris 9, pugnata ¢ 9, se, ab, sayi 0; Epeol. (¢): Triepeolus 
concavus, remigatus, simplex; Hucer.: Epimelissodes obliqua ¢ 9, 
Melissodes agilis ¢, fq, coloradensis ¢ 9, se, trinodis ¢, fq. 

Short-tongued Bees (3)— Halict.: Agapostemon radiatus ¢ 9, 
se, Odontalictus 2; Andren.: Pterandrena pulchella 9. 

Diptera (3)—Bombyli.: Systoechus ; Conop.: Physocephala tibi- 
alis; Tachin.: Cistogaster occidua. 


Silphium laciniatum (15:463-4).—Blooms June 21—August 
30; 29 visitors observed, July 16—August 6; Mas, Y. 

Long-tongued Bees (13)—Ap.: Apis; Bomb.: Bombias separatus 
2 §, Bombus americanorum $; Ceratin.: Ceratina 2; Megachil.: 
(2) : Megachile brevis, 6-dentata, Sayapis pugnata, sc; Epeol.: Tri- 


CHARLES ROBERTSON 89 


epeolus concavus d, concolor ¢ 9; Hucer.: Epimelissodes obliqua J, 
Melissodes agilis ¢ 9, ab, bimaculata 4’, coloradensis ¢ 2, se, fq. 

Short-tongued Bees (5, 9)—WHalict.: Agapostemon texanus se, 
viridulus se, Chloralictus pilosus ¢, n, sparsus ¢, n, Odontalictus 
¢, n. 

Diptera (9)—Syrph.: Allograpta, Eristalis latifrons, transver- 
sus, Tropidia mamillata; Bombyli.: Anthrax alternata f, n, Geron 
rufipes, Systoechus ; Conop.: Zodion fulvifrons, obliquefasciatum. 

Lepidoptera (2)—Nymphal.: Anosia; Papilion.: Eurymus fq. 


Silphium perfoliatum (16: 176-7).—Blooms July 9-September 
12; 75 visitors observed, July 23-September 12; Mas, Y. 

Long-tongued Bees (26)—Ap.: Apis se, fq; Bomb.: Bombias 
seutellaris ¢, separatus ¢ %, Bombus americanorum ¢ @ Y, se, fq, 
consimilis 8, se, fq, impatiens 9, se, fq; Ceratin.: Ceratina 9, se, fq; 
Megachil.: Megachilini: Megachile brevis ¢ 9, se, mendica ¢ Q, se, 
petulans ¢ 9, se, fq, Sayapis pugnata 2, se, fq, sayi f'; Coelioxyini: 
Coelioxys germana <{; Lpeol.: Triepeolus concavus ¢ 2, concolor 
3 9, fq, lunatus J, remigatus ¢ 9, fq, simplex ¢; Hucer.: Epimelis- 
sodes obliqua ¢ 9, se, Melissodes agilis ¢ 2, fq, bimaculata J, colora- 
densis ¢ 2, se, simillima J, trinodis ¢ 9, fq, vernoniae 9, vernoni- 
ana ¢ 9, fq. 

Short-tongued Bees (14)—Halict.: Agapostemon radiatus ¢ 9, 
se, splendens , viridulus 9, se, fq, Chloralictus pilosus 2, ¢, fq, n, 
sparsus 9, ¢, fq, n, versatus 2, ¢, n, Evylaeus pectoralis 9, ¢, n, Ha- 
lietus lerouxii 2, Odontalictus 9, se, Oxystoglossa confusa 9; An- 
dren.: Pterandrena aliciae 9, pulchella ¢, fq; Panufg.: Pseudo- 
panurgus labrosiformis ¢, fq, rugosus ¢ 9. 

Other Hymenoptera (3)—Sphec.: Sphex procera; Scoli.: Seolia 
bicincta ; Lumen.: Leionotus dorsalis. 5 A 

Diptera (12)—Syrph.: Allograpta f, n, Eristalis tenax, trans- 
versus, Milesia f, n; Bombyli.: Anthrax alternata,f, n, haleyon, Ex- 
oprosopa fasciata, Geron rufipes, Sparnopolius, Systoechus fq; 
Conop.: Zodion obliquefasciatum ; Tachin.: Archytas aterrima. 

Lepidoptera (20)—Nymphal.: Anosia, Basilarchia archippus, 
astyanax, Charidryas, Polygonia interrogationis, Vanessa atalanta, 
eardui, huntera; Lycaen.: Chrysophanus; Papilion.: Euphoeades, 
Eurymus, Heraclides, Jasoniades, Laertias, Pontia; Hesperi.: Atry- 
tone delaware, zabulon, Epargyreus, Limochores taumas, Pholisora 
eatullus. 


Silphium terebinthinaceum.—Blooms July 2-September 30; 13 
visitors observed, August 9-28; Mas, Y. 


90 FLOWERS AND INSECTS—XXVI 


Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (7)—Ap.: Apis se, fq; Bomb.: Bombus 
americanorum 9, impatiens 9%, sc; Ceratin.: Ceratina 9, se; Mega- 
chil.: Megachile brevis 2; Hucer.: Epimelissodes obliqua 9, se, Me- 
lissodes coloradensis ¢. 

Short-tongued Bees (2)—Halict.: Agapostemon radiatus 0, 
Odontalictus J 9, se, fq. 

Other Hymenoptera (1)—Sphec.: Sphex procera. 

Diptera (2)—Bombylt.: Sparnopolius, Systoechus. 


Solidago canadensis (15: 455-6).—Blooms August 1—October 
17; 218 visitors observed, August 1—October 10; Mis, Y. 

Long-tongued Bees (22)—Ap.: Apis se, ab; Bomb.: Bombias 
scutellaris ¢' Y, separatus ¢ 9, fq, Bombus americanorum ¢ 9, ab, 
consimilis ¢', impatiens ¢ 9 9%, sc, fq, Psithyrus variabilis 9; 
Ceratin.: Ceratina 9, sc; Stelid.: Stelidium ¢ 9, fq; Megachil.: 
Trypetini: Neotrypetes productus <, truncatus ¢ 9, se, ab; Os- 
miini: Ashmeadiella 9, se; Coelioxyini: Coelioxys sayi f' 2; Nomad.: 
Holonomada placida ¢ 9, Nomada vicina <'; Epeol.: Epeolus au- 
tumnalis 9, pusillus ¢ 9, Triepeolus pectoralis ¢; Hucer.: Melis- 
sodes autumnalis 9, se, boltoniae 9, se, nivea 9, se, simillima . 

Short-tongued Bees (28)—AHalict.: Augochlora viridula <j, 
Chloralictus albipennis 9, sc, versatus ¢, ab, Curtisapis coriacea 
9, se, forbesii ¢ 9, se, Halictus lerouxii 9, sc, Odontalictus 9, se, 
Seladonia ¢° 9, se; Sphecodini: Machaeris stygia ', Sphecodes 
heraclei 9, Sphecodium cressonii ¢ 9, fq, smilacinae ¢; Prosopid. 
(¢ 2): Prosopis illinoensis fq, pygmaea ab, sayi ab, ziziae sf, ab; 
Collet.: Colletes americanus ¢' 9, sc, ab, armatus J 92, se, fq, com- 
pactus 9, se, eulophi 7; Andren. (J 9, se, ab) : Andrena nubecula, 
Pterandrena solidaginis in cop, type; Panurg.: Calliopsis colora- 
densis ¢' 9, se, fq, in cop, Heterosarus 9, se, Perdita ¢ 9, se, fq, in 
cop, Pseudopanurgus asteris ¢' 9, se, fq, in cop, labrosiformis J, 
solidaginis J 9, se, ab, type. 

Other Hymenoptera (81)—Sphec.: Ammobia ichneumonea, 
pennsylvanica, Isodontia apicalis, Priononyx atrata, thomae, Sceli- 
phron, Sphex vulgaris; Bembic.: Stizus; Scoli.: Elis interrupta, 
5-cincta, Seolia bicineta, nobilitata; Philanth.: Cerceris compacta, 
finitima, fulvipes fq, kennicottii, prominens, Eucerceris fq; Vesp.: 
Polistes annularis ab, pallipes ab, rubiginosus,:variatus ab, Ves- 
pula cuneata, germanica; Humen.: Ancistrocerus campestris, capra 
ab, catskillensis, tigris ab, Eumenes fraternus, Leionotus anormis, 
arvensis, foraminatus, scrophulariae fq, ziziae, Zethus; Crabron.: 
Anacrabro fq, Clytochrysus, Hypocrabro, Lindenius errans, Lopho- 


CHARLES ROBERTSON 91 


erabro, Solenius, Synothyreopus, Xestocrabro 6-maculatus; Oxy- 
bel.: Notoglossa americana fq, frontalis fq, Oxybelus niger, 4-nota- 
tus; Pemphredon.: Mimesa; Larr.: Larropsis fq, Tachysphex 
acutus; Nysson.: Pseudoplisus phaleratus; Pompil.: Anoplius illi- 
noensis type, Ceropales bipunctata, elegans, fraterna, fulvipes, 
Cryptocheilus agenioides type, Episyron fq, Poecilopompilus inter- 
ruptus, navus, Pompiloides marginatus, subviolaceus, Priocnemoides 
fulvicornis, Psammochares relativus; Tiphi.: Tiphia punctata; 
Chrysid.: Hedychrum violaceum; Chalcid.: Leucospis fq, Perilam- 
pus fulvicornis, robertsonii; Evani.: Foenus tarsatorius; Jchneu- 
mon.: Ceratosoma, Cremastus retiniae, Lampronota americana, 
varia, Limneria eurycreontis Metopius polycinctorius; Bracon.: 
Agathis areolata fq, type, Bracon simplex, vernoniae, Chelonus, 
Iphiaulax ab. 

Diptera (62)—Stratiomy.: Nemotelus; Syrph.: Allograpta, 
Chilosia punctulata, Eristalis bastardi, dimidiatus ab, flavipes, lati- 
frons, tenax, Helophilus latifrons, similis sf, ab, Mesogramma gemi- 
nata, polita fq, Milesia, Orthoneura nitida sf, Paragus bicolor, 
Platychirus hyperboreus, quadratus, Spilomyia longicornis, quadri- 
fasciata, Syritta, Syrphus americanus, Tropidia mamillata fq, 
Xanthogramma emarginata; Empid.: Parempis; Bombyli.: Exo- 
prosopa decora, fascipennis, Geron rufipes, Sparnopolius, Toxo- 
phora; Conop.: Conops brachyrrhynchus, sylvosus, xanthopareus, 
Oncomyia, Physocephala texana, tibialis, Robertsonomyia ; T'achin.: 
Actia, Amobia distineta type, Apinops, Belvosia unifasciata, Cisto- 
gaster occidua, Euryceromyia robertsonii type, Gymnosoma, Hila- 
rella aristalis type, Ennyomma clistoides type, nigrifrons type, Pha- 
sioclista metallica type, Ocyptera tenuis, Pachyophthalmus signa- 
tus, Senotainia trilineata, Trichopoda plumipes; Sarcophag.: Heli- 
cobia helicis, Sarecophaga cimbicis, hunteri; Musc.: Compsomyia fq, 
Graphomyia, Morellia, Pseudopyrellia ab, Stomoxys; Anthomy.: 
Calythea, Phorbia acra; Trypet.: Trypeta humilis. < 

Lepidoptera (8)—Nymphal.: Anosia, Vanessa cardui; Lycaen.: 
Chrysophanus; Papilion.: Eurymus; Ctenuch.: Scepsis; Noctu.: 
Carneades, Feltia, Heliothis armiger ab. 

Coleoptera (14)—Bruch.: Bruchus obsoletus; Carab.: Callida 
f; Cerambyc.: Cyllene decorus f, robiniae f, fq; Chrysomel. (f): 
Diabrotica 12-punctata ab, longicornis ab, vittata; Coccinell.: Coe- 
cinella 9-notata, Hippodamea glacialis fq, Megilla f; Lampyr.: 
Chauliognathus pennsylvanicus ab; Malach.: Collops; Melo.: Epi- 
cauta pennsylvanica f, ab; Scarabae.: Euphoria sepulchralis f. 

Hemiptera (3)—Caps.: Calocoris; Core.: Alydus pilosulus; 
Lygae.: Lygaeus. 


} 


92 FLOWERS AND INSECTS—XXVI 


Solidago graminifolia (15: 457-8).—Blooms July 29-Septem- 
ber 29; 44 visitors observed, September 4—25; Mis, Y. 

Long-tongued Bees (7)—Ap.: Apis sec, ab; Bomb.: Bombias 
scutellaris %, separatus 4, Bombus americanorum ¢ %, fq, im- 
patiens 9, sc, fq; Hucer.: Melissodes boltoniae 2 se, nivea Q, se, 
type. 

Short-tongued Bees (4, 9, se)—Halict.: Chloralictus versatus, 
Odontalictus; Collet.: Colletes armatus; -Andren.: Pterandrena 
solidaginis. 

Other Hymenoptera (14)—Sphec.: Priononyx atrata; Bembie.: 
Bembix nubillipennis, Megastizus; Scoli.: Elis 5-cineta, Scolia bi- 
cincta; Philanth.: Eucerceris; Vesp.: Polistes pallipes, variatus; 
Eumen.: Ancistrocerus capra ab, ecatskillensis, tigris; Crabron.: 
Hypocrabro, Xestocrabo 6-maculatus; Larr.: Larropsis; Pompuil.: 
Priocnemoides fulvicornis. 

Diptera (9)—Syrph.: Helophilus latifrons, similis ab, Sphaero- 
phoria, Spilomyia 4-fasciata; Tachin.: Cistogaster occidua, Para- 
didyma, Senotainia rubriventris; Musc.: Compsomyia, Pseudo- 
pyrellia. 

Lepidoptera (8)—Nymphal.: Phyciodes, Vanessa huntera; 
Lycaen.: Chrysophanus, Everes; Papilion.: Eurymus; Arctt.: 
Utetheisa; Cramb.: Crambus; Noctu.: Heliothis armiger. 

Coleoptera (2)—Lampyr.: Chauliognathus pennsylvanicus ab; 
Melo.: Epicauta pennsylvanica ab. 


Solidago missouriensis (15: 454-5).—Blooms June 26—August 
22; 69 visitors observed, July 21—-August 19; Mis, Y. 

Long-tongued Bees (6)—Ap.: Apis; Ceratin.: Ceratina ¢; 
Megachil.: Coelioxys 8-dentata 9; Eypeol.: Epeolus bifasciatus 9; 
Eucer.: Epimelissodes obliqua 9, sc, fq, Melissodes boltoniae 9, se. 

Short-tongued Bees (10)—Halict.: Chloralictus albipennis 9, se, 
sparsus 9, se, tegularis 9, sc, versatus ¢ 9, sc, ab, Evylaeus pecto- 
ralis ¢ 9, se, Odontalictus 9, se, ab, Oxystoglossa similis 9, Seladonia 
2; Sphecodini: Machaeris stygia 2; Prosopid.: Prosopis pygmaea 
J 2, ab. 

Other Hymenoptera (31)—Sphec.: Ammobia ichneumonea, 
pennsylvanica, Priononyx atrata, Sphex nigricans, pictipennis, vul- 
garis; Scolt.: Elis interrupta, 5-cincta ab, Scolia bicincta fq; Phal- 
anth.: Cerceris clypeata, compacta, finitima, Eucerceris, Philanthus 
ventilabris; Vesp. Polistes variatus; Humen.: Eumenes fraternus, 
Leionotus anormis, arvensis fq, histrionalis, vagus; Crabron.: Pro- 
tothyreopus bigeminus, Solenius; Oxybel.: Notoglossa americana, 
frontalis, Oxybelus 4-notatus; Larr.: Larropsis fq; Nysson.: Silaon ; 


6 


CHARLES ROBERTSON 93 


Chrysid.: Hedychrum wiltii ab; Chalcid.: Perilampus cyaneus; 
Ichneumon.: Ceratosoma fq; Bracon.: Microdus. 

Diptera (17)—Syrph.: Mesogramma marginata, Syritta; Em- 
pid.: Parempis; Bombyli.: Exoprosopa fascipennis fq; Conop.: 
Zodion obliquefasciatum; T'achin.: Alophora aeneoventris, Cisto- 
gaster occidua, Gymnosoma, Gymnoprosopa, Phorantha magna, 
pruinosa, Senotainia rubriventris, trilineata fq, Siphoplagia anom- 
ala, flaccidirostris; Sarcophag.: Helicobia helicis; Sareophaga 
hunteri. 

Coleoptera (4)—Chrysomel.: Diabrotica 12-punctata f; Lam- 
pyr.: Chauliognathus pennsylvanicus; Melo.: Epicauta pennsyl- 
vanica f, ab, n; Rhipiphor.: Myodites. 

Hemiptera (1)—Lygae.: Lygaeus. 

July 30, 1909, the following 13 species and 32 individuals were 
taken on the flowers: 

Long-tongued Bees (1: 1)—Megachil.: Coelioxys 8-dentata 1. 

Short-tongued Bees (3: 19)—Halict.: Chloralictus sparsus 4, 
versatus 10; Prosopid.: Prosopis pygmaea 5. 

Other Hymenoptera (5: 5)—Sphec.: Sphex vulgaris 1; Phi- 
lanth.: Cerceris finitima 1; Zwmen.: Leionotus histrionalis 1; Oxry- 
bel.: Notoglossa americana 1; Nysson.: Silaon 1. 

Diptera (4: 7)—Syrph.: Mesogramma marginata 1, Syritta 3; 
Empid.: Parempis 1; Tachin.: Cistogaster oecidua 2. 


Solidago nemoralis (15: 457).—Blooms September 9—October 
18; 92 visitors observed, September 19—October 9; Mis, Y. 

Long-tongued Bees (8)—Ap.: Apis se, ab; Bomb.: Bombias 
auricomus ¢, Bombus americanorum ¢ ? 9, impatiens 4; Ceratin.: 
Ceratina ¢ 2, fq; Megachil.: Neotrypetes truncatus 9, se, Megachile 
brevis 2, sc; Epeol.: Triepeolus cressonii &. 

Short-tongued Bees (15)—Halict.: Chloralictus illinoensis ¢, 
versatus ¢ 9, se, fq, Evylaeus pectoralis 2, Odontalictus 4, Oxysto- 
glossa similis 9, Paralictus platyparius 2; Prosopid.: Prosopis 
pygmaea 9, fq; Collet.: Colletes americanus ¢ 2, sc, ab, armatus ¢ 
9, se, fq, compactus 9, se, fq, eulophi 9, se; Andren.: Andrena nu- 
becula 9, sc, ab, Pterandrena asteris 9, sec; Panurg.: Pseudopanur- 
gus asteris 9, sc, compositarum 9. 

Other Hymenoptera (28)—Sphec. Sphex pictipennis, procera, 
vulgaris; Philanth.: Cerceris clypeata, finitima, kennicottii, Philan- 
thus punctatus; Vesp.: Polistes annularis ab, pallipes fq, rubigino- 
sus, variatus fq; Eumen.: Ancistrocerus catskillensis, tigris, Leio- 
notus anormis, foraminatus, histrionalis; Crabron.: Protothyreopus 
rufifemur, Solenius fq; Ozybel.: Notoglossa frontalis; Pemphre- 


94 FLOWERS AND INSECTS—XXVI 


don.: Mimesa; Larr.: Larropsis; Pompil.: Anoplius illinoensis, 
Ceropales fraterna, fulvipes, Planiceps niger, Pompiloides margina- 
tus; Chrysid.: Gonochrysis ; Bracon.: Chelonus. 

Diptera (27)—Syrph.: Mesogramma geminata, Sphaerophoria, 
Spilomyia longicornis, Syritta sf, Syrphus americanus sf, arcuatus; 
Bombyli.: Sparnopolius, Systropus; Conop.: Oncomyia; Tachin.: 
Archytas aterrima, Gymnosoma, Pachyophthalmus signatus fq, Po- 
lidea, Trichopoda pennipes, Xanthomelana; Sarcophag.: Helicobia 
helicis, Sarcophaga cimbicis, hunteri; Musc.: Compsomyia, Lucilia 
caesar, sericata, Musca, Pseudopyrellia, Stomoxys; Oscin.: Chlorops 
proxima; Trypet.: Trypeta humilis, solaris. 

Lepidoptera (6)—-Nymphal.: Anosia; Papilion.: Eurema, Eury- 
mus; Arctt.: Utetheisa; Ctenuch.: Scepsis; Noctu.: Heliothis armi- 
ger. 

Coleoptera (5)—Cerambyc.: Cyllene robiniae £; Chrysomel.: 
Diabrotica longicornis; Coccinell.: Coccinella 9-notata £; Lampyr.: 
Chauliognathus pennsylvanicus; Melo.: Epicauta pennsylvanica f, 
ab, in cop. 

Hemiptera (3)—Caps.: Lygus; Core.: Alydus pilosulus; Ly- 
gae.: Lygaeus. 

October 4, 1909, the following 17 species and 56 individuals were 
taken on the flowers: 

Long-tongued Bees (1: 21)—Ap.: Apis 21. f 

Short-tongued Bees (2: 10)—Andren.: Andrena nubecula 9; 
Panurg.: Pseudopanureus asteris 1. 

Other Hymenoptera (4: 12)—Vesp.: Polistes annularis 9, vari- 
atus 1; Humen.: Ancistrocerus catskillensis 1, tigris 1. 

Diptera (5: 5)—Syrph.: Mesogramma geminata 1; Bombyli.: 
Sparnopolius 1; Tachin.: Xanthomelana 1; Musc.: Lucilia caesar 1, 
Pseudopyrellia 1. 

Lepidoptera (1: 1)—Ctenuch.: Scepsis 1. 

Coleoptera (3: 6)—Cerambyc.: Cyllene robiniae 1; Chrysomel.: 
Diabrotica longicornis 3; Lampyr.: Chauliognathus pennsylvanicus 
2. 


Hemiptera (1: 1)—Lygae.: Lygaeus 1. 


Solidago rigida.—Blooms August 23-October 7; 52 visitors 
observed, September 4-25; Mas, Y. 

Long-tongued Bees (9)—Ap.: Apis; Bomb.: Bombus ameri- 
canorum 4 2 &, ab, -impatiens ¢ 9 Y, se, Psithyrus variabilis 9; 
Megachil.: Megachile brevis ?, sc, Xanthosarus 2; Eucer.: Epime- 
lissodes obliqua @, sc, Melissodes autumnalis ¢ 9, se, ab, nivea 9. 


CHARLES ROBERTSON 95 


Short-tongued Bees (3)—Halict.: Chloralictus versatus 9; Col- 
let.: Colletes americanus 9, sc, compactus ¢. 

Other Hymenoptera (16)—Sphec.: Priononyx atrata, thomae, 
Sphex procera; Philanth.: Cerceris compacta, prominens; Vesp.: 
Polistes annularis, pallipes, variatus; Humen.: Ancistrocerus capra, 
tigris fq, Leionotus arvensis, foraminatus, scrophulariae; Crabron.: 
Protothyreopus rufifemur, Solenius; Pompil.: Ageniella petiolata. 

Diptera (13)—Syrph.: Paragus bicolor, tibialis f, n, Sphaero- 
phoria, Syritta; Bombyli.: Sparnopolius ab; Conop.: Stylogaster 
biannulata; Jachin.: Cistogaster occidua, Linnaemyia, Pachy- 
ophthalmus signatus, Spallanzania; Sarcophag.: Sarcophaga cim- 
bicis; Musc.: Compsomyia, Pseudopyrellia. 

Lepidoptera (7)—Nymphal.: Anosia, Basilarchia archippus; 
Lycaen.: Everes, Heodes; Papilion.: Eurymus; Hesperi.: Polites; 
Noctu.: Drasteria erechtea. 

Coleoptera (4)—Chrysomel. (f, n): Diabrotica 12-punctata, 
longicornis ab; Lampyr.: Chauliognathus pennsylvanicus ab; 
Melo.: Epicauta pennsylvanica f, ab, n. 

September 18, 25, 1909, the following 29 species and 146 in- 
dividuals were taken on the flowers: 

Long-tongued Bees (6:51)—Ap.: Apis 2; Bomb.: Bombus 
americanorum 35, impatiens 3, Psithyrus variabilis 1; Megachil.: 
Megachile brevis 1; Eucer.: Melissodes autumnalis 9. 

Short-tongued Bees (2:2)—Collet.: Colletes americanus 1, 
compactus 1. } 

Other Hymenoptera (9:17)—Sphec.: Sphex procera 2; 
Philanth.: Cerceris compacta 1; Vesp.: Polistes annularis 1, pal- 
lipes 1, variatus 2; Eumen.: Ancistrocerus capra 2, tigris 5, Leiono- 
tus foraminatus 2, scrophulariae 1. 

Diptera (5:22)—Syrph.: Paragus tibialis 1, Sphaerophoria 2; 
Bombyli.: Sparnopolius 17 ; Tachin.: Spallanzania 1; Musc.: Comp- 
somyia 1. 

Lepidoptera (3:4)—Lycaen.: Everes 1, Heodes 1; Noctu.: 
Drasteria erechtea 2. 

Coleoptera (4:50; 3:25 n)—Chrysomel.: Diabrotica 12-pune- 
tata 1, longicornis 11; Lampyr.: Chauliognathus pennsylvanicus 
25; Melo.: Epicauta pennsylvanica 13, n. 


Solidago serotina.—Blooms August 24-September 27; seven 
visitors observed, August 30—-September 20; Mas (Mis), Y. 

Long-tongued Bees (3)—Bomb.: Bombus americanorum 4, 
consimilis $; Eucer.: Melissodes simillima ¢. 

Short-tongued Bees (1)—Panurg.: Pseudopanurgus asteris 9, se. 


96 FLOWERS AND INSECTS—XXVI 


Other Hymenoptera (1)—Crabron.: Xestocrabro 6-macuiatus. 
Diptera (1)—Syrph.: Spilomyia 4-fasciata. 
Coleoptera (1)—Cerambyc.: Cyllene robiniae f, n. 


Solidago speciosa.—Blooms September 12-—October 17; nine 
visitors observed, September 23—October 6; Mas, Y. 

Long-tongued Bees (5)—Ap.: Apis fq; Bomb.: Bombias auri- 
comus ?, Bombus americanorum ¢ %, fq, impatiens ¢ 9, Psithyrus 
variabilis 9. 

Other Hymenoptera (1)—Vesp.: Polistes variatus. 

Lepidoptera (2)—Nymphal.: Vanessa huntera; Ctenuch.: 
Scepsis fq. 

Coleoptera (1)—ZLampyr.: Chauliognathus pennsylvanicus fq. 


Solidago ulmifolia—Blooms August 20—October 7; 52 visitors 
observed, August 22-September 20; Mis, Y. 

Long-tongued Bees (7)—Bomb.: Bombus impatiens .; 
Megachil.: Neotrypetes truncatus ¢' 9, se, fq; Megachile brevis ¢; 
Eucer. (2, se) : Melissodes autumnalis, boltoniae, simillima, trinodis. 

Short-tongued Bees (15)—Halict.: Chloralictus sparsus ¢ 9, 
se, Evylaeus pectoralis 2, sc; Sphecodini: Sphecodium cressonii 
& 2; Prosopid.: Prosopis illinoensis 9, pygmaea 9, ziziae 0 9; 
Collet.: Colletes americanus 9, sc, armatus ¢' 9, sc; Andren.: An- 
drena nubecula ¢ 9, se, fq, Pterandrena asteris ¢ 9, se, solidaginis 
2, se, fq; Panurg. (sc) : Heterosarus ?, Perdita 9, Pseudopanurgus 
asteris ¢' 2, ab, compositarum 9. 

Other Hymenoptera (14)—Sphec.: Sphex vulgaris; Philanth.: 
Cerceris astarte, prominens; Vesp.: Polistes annularis, pallipes; 
Eumen.: Ancistrocerus campestris, tigris, Eumenes fraternus, 
Leionotus scrophulariae; Crabron.: Rhopalum scutellatum, Syno- 
thyreopus; Larr.: Larropsis; Chrysid.: Hedychrum violaceum; 
Nysson.: Alyson. 

Diptera (15)—Syrph.: Allograpta, Helophilus similis, Spil- 
omyia longicornis, Syritta, Syrphus americanus; Empid.: Par- 
empis; Bombyl.: Anthrax alternata f, Exoprosopa decora, Geron 
rufipes, Sparnopolius; Tachin.: Archytas aterrima, Ennyomma 
nigrifrons, Peleteria, Siphona; Musc.: Morellia. 

Hemiptera (1)—Caps.: Lygus. 


Taraxacum officinale (int.).—Blooms March 23—November 27; 
18 visitors observed, March 28—May 28; Mis, Y. 

Long-tongued Bees (5)—Ap.: Apis se, fq; Bomb.: Bombus 
impatiens 2; Megachil.: Ceratosmia 4, Osmia pumila ¢; Nomad.: 
Nomada denticulata %. 


CHARLES ROBERTSON 97 


Short-tongued Bees (6)—Halict. (2?) : Agapostemon radiatus se, 
Chloralictus versatus fq, Odontalictus sc; Andren. (gf): Andrena 
dunningii, Opandrena cressonii, miserabilis fq. 

Diptera (6)—Syrph.: Eristalis aeneus; Bombyli.: Bombylius 
major, pulchellus; Conop.: Myopa vesiculosa; Musc.: Pseudopy- 
rellia; Anthomy.: Phorbia acra. 

Lepidoptera (1)—Nymphal.: Vanessa huntera. 


Verbesina helianthoides (15:471-2).—Blooms June 6—August 
10; 46 visitors observed, June 10—July 11; Mas, Y. 

Long-tongued Bees (21)—Ap.: Apis se, fq; Bomb.: Bombias 
auricomus 9, Bombus americanorum 9? %; Ceratin.: Ceratina 9, 
fq; Megachil.: Trypetini: Neotrypetes truncatus ?, se; Osmiini: 
Ashmeadiella 9, se, Hoplitis 9; Megachilini: Cyphopyga ¢ 9, 
Megachile brevis ¢ 9, sc, fq, mendica 9, se, petulans ¢ 9, se, 6-den- 
tata 9, Sayapis pollicaris 4, pugnata ¢ 9, se, fq, Xanthosarus 3; 
Coelioxyini: Coelioxys alternata ¢, 8-dentata , rufitarsis ¢; 
Epeol.: Epeolus bifasciatus ¢; HLucer.: Epimelissodes obliqua 9, 
Tetralonia dilecta 9. 

Short-tongued Bees (14)—Halict.: Agapostemon viridulus 9, 
Chloralictus pilosus 9, se, sparsus 9, ¢, n, versatus 9, se, Curtisapis 
eoriacea 9, Evylaeus arcuatus 9, Halictus lerouxii 9, se, Odontalic- 
tus ¢ 9, se, Oxystoglossa pura <j, similis ?, se; Collet.: Colletes 
eulophi 9, se; Andren.: Pterandrena rudbeckiae 9; Panurg.: Cal- 
liopsis andreniformis 9, sc, Pseudopanurgus albitarsis ¢ 9, se. 

Other Hymenoptera (4)—Sphee.: Sphex nigricans fq, pictipen- 
nis, procera fq; Bembic.: Stictiella. 

Diptera (4)—Syrph.: Eristalis transversus, Mesogramma mar- 
ginata f, n; Bombyli.: Anthrax parvicornis, Systoechus. 

Lepidoptera (3)—Nymphal.: Phyciodes; Hesperi.: Thanaos 
juvenalis; Ctenuch.: Seepsis. 


Vernonia fasciculata (15: 451-2).—Blooms July 1—October 1; 
45 visitors observed, July 21-September 24; Mas, R. 

Long-tongued Bees (20)—Ap.: Apis; Bomb.: Bombias auri- 
comus ? ¥Y, separatus ¢, Bombus americanorum ¢ 9, ab, Psithyrus 
variabilis ¢ 9, fq; Ceratin.: Ceratina 9, se; Megachil.: Neotrypetes 
truncatus 9, sc; Sayapis sayi ¢ 9, Xanthosarus ¢ 9, se; Hpeol.: 
Triepeolus concavus ¢ 9, ab, nevadensis ¢, fq, remigatus ¢ 9; 
Eucer.: Epimelissodes atripes 9, obliqua ¢ 9, se, ab, Melissodes 
agilis J, bimaculata 4, nivea ¢, fq, vernoniae ¢ 9, se, ab, oligolege, 
type, vernoniana ¢ 9, se, ab, oligolege, type; Emphor.: Emphor 9. 


98 FLOWERS AND INSECTS—XXVI 


Short-tongued Bees (6)—Halict.: Agapostemon radiatus 4, 
viridulus ¢, Chloralictus pilosus 2, se, pruinosus @, se, versatus 
2, e, Odontalictus 9, e. 

Diptera (3)—Bombylt.: Exoprosopa fasciata ab, Systoechus, 
Systropus. 

Lepidoptera (16)—Nymphal.: Anosia, Argynnis; Lycaen.: 
Uranotes; Papilion.: Callidryas, Euphoeades, Eurymus ab, Hera- 
clides, Jasoniades, Papilio, Pieris; Hespert.: Epargyreus, Euphyes 
metacomet, Limochores manataaqua, taumas fq, Polites; Noctu.: 
Leucania. 

CONVOLVULACEAE 

Convolvulus sepium (138:581).—Blooms May 27—September 
21; 10 visitors observed, June 16—July 7; Ma, W. 

Long-tongued Bees (8)—Bomb.: Bombus americanorum ? 9, 
ab; Ceratin.: Ceratina 9; Megachil.: Alcidamea truncata 3; Eucer.: 
Melissodes bimaculata <¢, Peponapis ?, Tetralonia dilecta 9, fq; 
Emphor.: Melitoma ¢ 9; Anthophor.: Anthemoessa 9. 

Short-tongued Bees (1)—WHalict.: Agapostemon viridulus 9. 

Coleoptera (1)—Scarabae.: Trichius piger f, n. 


Cuscuta cephalanthi.—Blooms September 15-October 3; one 
visitor observed, September 15; Mis, W. 
Short-tongued Bees (1)—Halict.: Curtisapis coriacea 9. 


Cuscuta glomerata.—Blooms July 21-September 17; one vis- 
itor observed, September 8, 17; Mis, W. 
Short-tongued Bees (1)—Collet.: Colletes eulophi 9. 


Ipomoea hederacea (int).—Blooms July 23—October 26; three 
visitors observed, July 29-September 21; Ma, R. 

Long-tongued Bees (3)—Bomb.: Bombus americanorum ¢ 9, 
fq, consimilis $; Hucer.: Peponapis <. 


Ipomoea pandurata (13:581).—Blooms June 24—September 
20; 18 visitors observed, July 11-September 9; Ma, W. 

Long-tongued Bees (14)—Ap.: Apis; Bomb.: Bombias auri- 
comus 9, fq, separatus ¢ 9, Bombus americanorum ¢ @ 9, se, faq, 
consimilis $; Epeol.: Triepeolus remigatus 9; Hucer.: Cemolobus 
ipomoeae ¢ 9, se, ab, type, oligolege?, Epimelissodes atripes 9, 
obliqua <', Melissodes bimaculata ¢ 2, sc, ab, Peponapis ¢ 9, ab, 
Xenoglossa ¢ 9, ab; Hmphor. (gf 2): Emphor fq, Melitoma se, ab. 

Lepidoptera (4)—Papilion.: Euphoeades, Laertias; Hesperi.: 
Atrytone zabulon; Sphing.: Sphinx. 


Ipomoea purpurea (int).—Blooms June 25—October 26; nine 
visitors observed, August 16—October 7; Ma, R. 


CHARLES ROBERTSON 99 


Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (6)—Bomb.: Bombus americanorum 9%, fq, 
consimilis 9 %; Eucer.: Melissodes bimaculata 9, Peponapis ¢ 9, 
Xenoglossa 9; Emphor.: Melitoma ¢ 9, se, ab. 

Short-tongued Bees (1)—Halict.: Agapostemon viridulus 9. 

Lepidoptera’ (1)—Sphing.: Deilephila. 


CoRNACEAE 

Cornus amomum.—Blooms May 29—July 26; 96 visitors ob- 
served, May 29-June 11; Mis, W. 

Long-tongued Bees (9)—Ap.: Apis se, fq; Bomb.: Bombias sep- 
aratus 9, Bombus americanorum 2, sc; Ceratin.: Ceratina ¢ 9, se, 
fq; Megachil.: Megachile brevis 2; Xylocop.: Xylocopa Q, se; 
Nomad.: Holonomada affabilis ¢, fq; Eucer.: Tetralonia rosae 4’; 
Anthophor.: Anthemoessa . 

Short-tongued Bees (23)—Halict. (2): Agapostemon radiatus 
se, fq, viridulus se, Augochlora fervida, Chloralictus pilosus se, 
pruinosus, tegularis, versatus se, fq, Curtisapis forbesii, Evylaeus 
pectoralis sec, Halictus parallelus, Odontalictus se, Oxystoglossa 
confusa, similis se; Prosopid.: Prosopis illinoensis 2, pygmaea ¢’; 
Andren.: Andrena platyparia ¢ 9, se, sayi 9, se, fq, Opandrena 
cressonii 2, se, fq, miserabilis 2, Trachandrena claytoniae 9, crataegi 
2, heraclei 2, se, fq, hippotes 9. 

Other Hymenoptera (15)—Sphec.: Isodontia apicalis, Sphex 
nigricans, vulgaris; Philanth.: Cerceris finitima; Vesp.: Polistes 
variatus; Eumen.: Leionotus anormis, arvensis, foraminatus fq, 
illinoensis, leucomelas, ziziae, Zendalia zendaloides; Crabron.: 
Solenius; Oxrybel.: Notoglossa americana, frontalis. 

Diptera (31)—Syrph.: Allograpta, Chrysogaster nigripes, Eris- 
talis dimidiatus, latifrons, transversus, Mallota cimbiciformis, 
Mesogramma marginata, Myiolepta nigra, Orthoneura nitida in cop, 
pictipennis, Sphaerophoria, Syritta; Bombyli.: Argyramoeba albo- 
fasciata f; Conop.: Zodion fulvifrons; Tachin.: Archytas analis, 
aterrima, Belvosia bifasciata, Blepharipeza, Linnaemyia, Phorantha 
purpurascens; Sarcophag.: Calliphora erythrocephala, Helicobia 
helicis, Sarcophaga cimbicis; Musc.: Lucilia caesar, sericata, Pol- 
lenia, Pseudopyrellia; Anthomy.: Anthomyiella, Calythea, Phorbia 
acra fq, platura fq. 

Lepidoptera (16)—Nymphal.: Argynnis, Basilarchia archippus, 
astyanax, Phyciodes, Vanessa atalanta, huntera; Lycaen.: Chryso- 
phanus, Cyaniris; Papilion.: Heraclides, Jasoniades, Laertias; Hes- 
peri.: Atrytone zabulon, Epargyreus, Limochores taumas, Polites; 
Ctenuch.: Scepsis. 


100 FLOWERS AND INSECTS—XXVI 


Coleoptera (2)—Curculion.: Centrinus scutellum-album; Mor- 
dell.: Mordella marginata in cop. 

June 1, 1911, the following 34 species and 97 individuals were 
taken on the flowers: 

Long-tongued Bees (4:21)—Ap.: Apis. 4; Bomb.: Bombus 
americanorum 6; Ceratin.: Ceratina 10; Xylocop.: Xylocopa 1. 

Short-tongued Bees (16: 56)—Halict.: Agapostemon radiatus 4, 
viridulus 13, Chloralictus pilosus 2, tegularis 1, versatus 3, Cur- 
tisapis forbesii 1, Evylaeus pectoralis 3, Halictus parallelus 2, 
Oxystoglossa confusa 1, similis 2; Prosopid.: Prosopis illinoensis 1; 
Andren.: Andrena platyparia 4, sayi 7, Opandrena cressonii 2, 
miserabilis 3, Trachandrena heraclei 7. 

Other Hymenoptera (2:5)—KHumen.: Leionotus foraminatus 1; 
Oxybel.: Notoglossa americana 4. 

Diptera (6:7)—Syrph.: Allograpta 1, Chrysogaster nigripes 1, 
Eristalis transversus 2; Bombylt.: Argyramoeba albofasciata 1; 
Sarcophag.: Sareophaga cimbicis 1; Anthomy.: Phorbia platura 1. 

Lepidoptera (5:7)—Nymphal.: Argynnis 1; Papilion.: Hera- 
clides 1, Jasoniades 3, Laertias 1; Hespert.: Epargyreus 1. 

Coleoptera (1:1)—WMordell.: Mordella marginata 1. 


Cornus florida (10: 232-3).—Blooms April 22—-May 8; 29 vis- 
itors observed on April 23; Mis, W. 

Long-tongued Bees (3)—Bomb.: Bombias separatus 2; Mega- 
chil.: Osmia pumila 9, se; Nomad.: Nomada illinoensis ¢. 

Short-tongued Bees (15)—alict. (2): Agapostemon radiatus, 
Chloralictus obscurus se, pilosus se, sparsus se, fq, versatus, zephy- 
rus, Curtisapis coriacea, Evylaeus foxii sec, Oxystoglossa confusa se, 
pura se, Seladonia se, fq; Andren.: Andrena carlini 9, Opandrena 
miserabilis ¢ 9, se, fq, Trachandrena claytoniae 9, se, fq, rugosa ¢ 9. 

Other Hymenoptera (2)—Vesp.: Polistes pallipes; Humen.: 
Leionotus foraminatus. 

Diptera (7)—Syrph.: Criorhina umbratilis, Mesogramma mar- 
ginata; Empid.: Empis humilis fq; Bombylt.: Bombylius major fq, 
pulchellus; Zonchae.: Lonchaea aberrans. 

Lepidoptera (1)—Hespert.: Thanaos juvenalis. 

Coleoptera (1)—Cerambyc.: Molorchus. 


Cornus paniculata (10: 233-5).—Blooms May 12—June 24; 82 
visitors observed, May 12—June 8; Mis, W. 

Long-tongued Bees (7)—Ap.: Apis se, fq; Bomb.: Bombias 
auricomus 9, c, Bombus americanorum 9, ec; Ceratin.: Ceratina 
9, se; Nomad.: Holonomada affabilis 9, superba 9; Eucer.: Tet- 
ralonia dilecta ¢ 9, se. 


CHARLES ROBERTSON 101 


Short-tongued Bees (24)—Halict. (2): Agapostemon radiatus 
se, viridulus se, Chloralictus pilosus, sparsus sc, tegularis fq, ver- 
satus se, fq, Evylaeus pectoralis sc, Oxystoglossa confusa se, similis ; 
Prosopid.: Prosopis crataegi ¢, eulophi ¢, pygmaea ¢, sayi 9, 
ziziae 4; Andren.: Andrena carlini ?, corni 9, type, paniculatae 9, 
se, platyparia ¢ 9, se, ab, sayi 9, sc, Opandrena cressonii 9, se, 
Trachandrena claytoniae 9, se, fq, forbesii 9, hippotes 2, rug- 
osa 9, se. 

Other Hymenoptera (13)—Sphec.: Chalybion, Sceliphron; 
Eumen.: Ancistrocerus campestris, unifasciatus, Eumenes frater- 
nus, Leionotus foraminatus, ziziae, Monobia; Crabron.: Lindenius 
errans, Solenius; Oxrybel.: Notoglossa americana; Pompil.: Cero- 
pales fulvipes; Chalcid.: Smicra torvina. 

Diptera (32)—Syrph.: Eristalis aeneus, dimidiatus, transversus, 
Mallota cimbiciformis, Orthoneura nitida, Pipiza pulchella, Syrphus 
americanus, Tropidia mamillata; Empid.: Empis distans, levicula, 
Parempis; Conop.: Oncomyia; Tachin.: Archytas analis fq, 
aterrima, Belvosia bifasciata, unifasciata, Chaetophleps, Euphoro- 
cera claripennis fq, Exorista confinis, Frontina frenchii, Para- 
didmya, Phorantha purpurascens, Spallanzania; Sarcophag.: 
Helicobia helicis, Sareophaga bullata; Musc.: Graphomyia, Lucilia 
caesar, sericata, Morellia; Anthomy.: Anthomyiella, Phorbia acra; 
Ortal.: Camptoneura. 

Lepidoptera (2)—Nymphal.: Vanessa atalanta; Papilion.: 
Iphiclides. 

Coleoptera (8)—Cerambyc.: Strangalia; Lampyr.: Podabrus 
tomentosus fq, Telephorus flavipes fq; Mordell.: Mordella margi- 
nata fq, Pentaria; Scarabae.: Euphoria fulgida, Trichius affinis in 
cop, piger fq. 

CRUCIFERAE 

Arabis dentata.—Blooms April 5-May 31; 48 species and 254 
individuals observed, April 24~May 15; Mi, W. 

Long-tongued Bees (12: 54)—Ap.: Apis se, 34; Bomb.: Bombias 
separatus 9, 2, Bombus impatiens 9, 3; Ceratin.: Ceratina d, 1, 
Zaodontomerus 4, 2; Megachil.: Osmia atriventris 9, 2, pumila ?, 1; 
Nomad.: Gnathias cuneatus ¢ 9, 2, ovatus ?, 2, xanthoparius d, 2, 
Xanthidium luteolum 9, 1; Lucer.: Tetralonia belfragei ¢ 9, 2. 

Short-tongued Bees (25: 177)—Halict. (2): Agapostemori radi- 
atus 3, Augochlora viridula 25, Chloralictus caeruleus 1, obscurus 2, 
sparsus se, 7, tegularis se, 1, versatus 11, zephyrus 9, Curtisapis 
coriacea 7, Evyleaus foxii se, 27, pectoralis se, 7, 4-maculatus 1, 
Halictus lerouxii 2, Oxystoglossa confusa 8, pura 12, similis se, 6, 


102 FLOWERS AND INSECTS—XXVI 


Seladonia sc, 4; Sphecodini: Proteraner <1, 6; Prosopd.: Prosopis 
sayi J, 1; Andren.: Andrena ecarlini 9, 1, geranii 4’, 3, nasonii 9, 
se, 9, Opandrena cressonii ¢ 9, sec, 10, miserabilis 9, 1, personata 
3 9, 13. 

Other Hymenoptera (2: 2)—Humen.: Leionotus foraminatus 1; 
Sapyg.: Sapyga 1. 

Diptera (9:21)—Syrph.: Mesogramma geminata 4, Syrphus 
americanus f, 6, ribesii f, 5, torvus f, 1; Empid.: Empis humilis 1, 
nuda 1, Pachymeria 1; Bombyli.: Bombylius major 1; Tachin.: 
Siphona 1. 


Arabis laevigata.—Blooms April 10—May 18; 13 species and 53 
individuals observed, April 238, 27, May 5; Mi, W. 

Long-tongued Bees (4:8)—Ceratin.: Ceratina 9, 4, Zaodon- 
tomerus 6, 2; Megachil.: Osmia pumila 9, 1; Nomad.: Gnathias 
ovatus Q, 1. 

Short-tongued Bees (7:40, 2)—Halict.: Chloralictus obscurus 
1, versatus se, 9, Evylaeus 4-maculatus 1, Oxystoglossa confusa se, 8, 
pura 1; Andren.: Andrena arabis se, 18, type, nasonii se, 2. 

Diptera (2:5)—Syrph.: Allograpta f, 1; Tachin.: Siphona 4. 


Arabis virginica.—Blooms March 20-May 15; 11 visitors ob- 
served, April 20, May 3, 8; Mi, W. 

Long-tongued Bees (1)—Nomad.: Gnathias ovatus 9. 

Short-tongued Bees (9)—Halict. (9): Agapostemon radiatus, 
Chloralictus versatsus, zephyrus, Halictus lerouxii, Oxystoglossa 
confusa, similis, Seladonia; Andren.: Opandrena cressonii 9; 
miserabilis <%. 

Diptera (1)—Anthomy.: Anthomyiella. 


Capsella bursa-pastoris (int).—Blooms March 20—December 1; 
60 visitors observed, April 16-June 1; Mi, W. 

Long-tongued Bees (4)—Ap.: Apis fq; Megachil.: Prochelos- 
toma ¢; Nomad.: Nomada parva 9; Hucer.: Tetralonia dilecta ¢. 

Short-tongued Bees (22)—Halict. (2): Chloralictus coreopsis 
se, eressonil, sparsus se, ab, tegularis sec, versatus sec, zephyrus se, 
Curtisapis forbesii sc, Dialictus se, Evylaeus foxii se, fq, pectoralis 
se, Halictus lerouxii se, Odontalictus, Oxystoglossa similis se, fq, 
Seladonia sc; Prosopid.: Prosopis pygmaea 6; Andren.: Andrena 
arabis 9, se, fq, nasonii 9, sec, Opandrena cressonii ¢ 9, se, fq, 
miserabilis 4, personata ¢' 2, se, fq, Trachandrena claytoniae ¢ 9, 
se, forbesii ¢. 

Other Hymenoptera (1)—Vesp.: Polistes pallipes. 


CHARLES ROBERTSON 103 


Diptera (27)—Syrph.: Allograpta, Eristalis dimidiatus sf, 
meigenii fq, Helophilus latifrons, similis, Mallota cimbiciformis, 
Melanostoma mellinum, Mesogramma geminata, marginata, 
Sphaerophoria, Syritta sf; Bombyli.: Aldrichia sf; Conop.: On- 
comyia, Zodion fulvifrons; Tachin,: Apinops, Gonia capitata, Gym- 
noprosopa, Peleteria, Siphona fq; Sarcophag.: Cynomyia fq, Heli- 
cobia helicis, Sarcophaga sinuata; Musc.: Lucilia caesar, sericata, 
sylvarum fq; Anthomy.: Phorbia,acra, platura. 

Lepidoptera (6)—Nymphal.: Charidryas, Phyciodes ; Papilion.: 
Pontia; Hesperi.: Pholisora catullus, Polites, Thanaos martialis. 

The first 100 individuals taken on the flowers, May 11, 13, 15, 
17, 1916, showed species and individuals as follows: 

Short-tongued Bees (12: 63)—Halict.: Chloralictus coreopsis 
1, sparsus 26, tegularis 1, versatus 2, zephyrus 1, Dialictus 1, Evy- 
laeus foxii 3, pectoralis 9, Oxystoglossa similis 2; Andren.: An- 
drena arabis 7, Opandrena cressonii 1, personata 9. 

Diptera (13: 37)—Syrph.: Eristalis meigenii 5, Mallota cimbici- 
formis 1, Mesogramma geminata 1, marginata 4, Syritta 4; 
Bombyli.: Aldrichia 1; Tachin.: Gymnoprosopa 1, Siphona 6; 
Musc.: Lucilia caesar 2, sericata 1, sylvarum 7; Anthomy.: Phor- 
bia acra 3, platura 1. 


Cardamine bulbosa (2: 298-9).—Blooms April 22—May 30; 49 
visitors observed, May 2-21; Mi, W. 

Long-tongued Bees (14)—Bomb.: Bombias auricomus 9; 
Ceratin.: Ceratina ¢ 9, se, fq, Zaodontomerus ¢{; Megachil.: Alci- 
damea simplex 4, Ceratosmia ¢' 2, Diceratosmia 9, se, Gnathosmia 
9, Osmia atriventris ¢ 9, fq, collinsiae ¢, cordata df, ab, type, 
pumila ¢ 9, se, ab; Nomad.: Holonomada superba ¢ 9, Nomada 
denticulata 4; Eucer.: Tetralonia dilecta ¢ 9. 

Short-tongued Bees (14)—Halict. (2): Chloralictus pilosus se, 
pruinosus se, fq, versatus se, fq, Evylaeus pectoralis se, fq, Odon- 
talictus, Oxystoglossa confusa, similis, Seladonia fq; Prosopid.: 
Prosopis pygmaea 4; Andren.: Andrena arabis 2, se, ab, sayi 9, 
Iomelissa 9, Opandrena miserabilis 2, personata ¢. 

Diptera (13)—Stratiomy.: Nemotelus; Syrph.: Mesogramma 
marginata, Orthoneura pictipennis, Sphaerophoria; 2mpid.: Empis 
avida, nuda, otiosa; Bombyli.: Bombylius atriceps fq, major; 
Conop.: Myopa vesiculosa, Zodion fulvifrons; Musc.: Lucilia eaesar ; 
Anthomy.: Phorbia acra. 

Lepidoptera (8)—Nymphal.: Phyciodes, Vanessa atalanta; 
Lycaen.: Everes; Papilion.: Eurymus, Pieris, Xanthidia; Hesperi.: 
Epargyreus, Pholisora catullus. 


104 FLOWERS AND INSECTS—XXVI 


Dentaria laciniata—Blooms April 2-May 2; 39 visitors ob- 
served, April 2-28; Mi, W. 

Long-tongued Bees (19)—Ap.: Apis se, fg.; Bomb. (2): Bom- 
bias separatus, Bombus americanorum, impatiens, ridingsii; Cera- 
tin.: Ceratina 6; Megachil.: Centrosmia ¢' ?, Ceratosmia ¢', Osmia 
pumila ¢; Nomad.: Gnathias cuneatus 4’, ovatus ¢', Nomada cres- 
sonii J, illinoensis 3, sayi ¢' 9, fq, Phor ¢, Xanthidium dentariae 
3; faq, type, luteoloides ¢, fq, luteolum .', fq; Eucer.: Tetralonia 
belfragei ¢ 9. 

Short-tongued Bees (14)—Halict. (2): Agapostemon radiatus, 
Chloralictus pilosus, sparsus se, versatus, Evylaeus foxii, Halictus 
lerouxii sc, Odontalictus; Andren.: Andrena carlini ¢ 9, fq, pruni 
db; sayi & 9, fq, tridens ¢', Opandrena cressonii ?, miserabilis ¢ , 
Trachandrena rugosa ¢ 9. 

Diptera (3)— Syrph.: Sphaerophoria f, n; Empid.: Empis 
humilis; Bombyli.: Bombylius major. 

Lepidoptera (2)—Zycuen.: Everes; Papilion.: Iphiclides. 

Coleoptera (1)—WNitidul.: Cereus f, fq, n. 


Lepidium virginicum.—Blooms April 12-November 7; 45 vis- 
itors observed, May 17—June 9; Mi, W. 

Long-tongued Bees (2)—Ceratin.: Ceratina ¢ 9, fq, Zaodonto- 
merus 6, fq. 

Short-tongued Bees (15)—Halict. (2): Agapostemon radiatus, 
Chloralictus coreopsis, sparsus sc, tegularis sc, versatus, Evylaeus 
arcuatus, pectoralis se, ab, Odontalictus, Oxystoglossa similis se, fq, 
Seladonia; Prosopid.: Prosopis pygmaea 6 9, sayi 2, ziziae ¢ 9, 
fq; Collet.: Colletes eulophi ¢; Andren.: Opandrena personata Q, se. 

Other Hymenoptera (6)—Eumen.: Leionotus clypeatus, histrion- 
alis, illinoensis; Oxybel.: Notoglossa frontalis; Pompil.: Anoplius 
illinoensis, Psammochares tenebrosus. 

Diptera (21)—Stratiomy.: Nemotelus; Syrph.: Eristalis dimid- 
iatus, Helophilus similis, Mesogramma marginata ab, Paragus bi- 
color, tibialis, Syritta; Conop.: Zodion fulvifrons fq; Tachin.: 
Apinops, Cistogaster occidua, pallasii, Gymnosoma, Leucostoma 
atra, Ocyptera tenuis, Phorantha purpurascens; Sarcophag.: Heli- 
eobia helicis; Musc.: Lucilia caesar, Pseudopyrellia; Anthomy.: 
Limnophora, Phorbia acra ab, platura ab. 

Lepidoptera (1)—Papilion.: Pontia. 

May 20, June 1, 1909, 166 individuals belonging to 34 species 
were taken on the flowers: 

Long-tongued Bees (2: 11)—Ceratin.: Ceratina 5, Zaodonto- 
merus 6. 


CHARLES ROBERTSON 105 


Short-tongued Bees (12: 35)—Halict.: Agapostemon radiatus ], 
Chloralictus coreopsis 1, tegularis 1, versatus 1, Evylaeus arcuatus 1, 
pectoralis 6, Oxystoglossa similis 6, Seladonia 4; Prosopid.: Prosopis 
pygmaea 4, sayi 2, ziziae 5; Andren.: Opandrena personata 3. 

Other Hymenoptera (4: 6)—Humen.: Leionotus elypeatus 1, 
histrionalis 3; Pompil.: Anoplius illinoensis 1, Psammochares tene- 
brosus 1. 

Diptera (16: 114)—Stratiomy.: Nemotelus 1; Syrph.: Eristalis 
dimidiatus 1, Helophilus, similis 1, Mesogramma marginata 33, 
Paragus bicolor 1, tibialis 1; Conop.: Zodion fulvifrons 6; Tachin.: 
Apinops 1, Cistogaster occidua 1, pallasii 1, Ocyptera tenuis 1; 
Sarcophag.: Helicobia helicis 1; Musc.:; Pseudopyrellia 1; An- 
thomy.: Limnophora 1, Phorbia acra 52, platura 12. 


Radicula obtusa.—Twenty-three visitors observed, May 1, 3, 8; 
MY, 

Long-tongued Bees (3)—Ap.: Apis fq; Megachil.: Alcidamea 
simplex 2; Nomad.: Nomada illinoensis 9. 

Short-tongued Bees (11, 2)—Halict.: Chloralictus albipennis, 
pilosus, versatus se, fq, zephyrus, Evylaeus arcuatus, Odontalictus, 
Oxystoglossa confusa, similis fq, Seladonia fq; Andren.: Andrena 
erythrogastra, Opandrena cressonii. 

Other Hymenoptera (3)—Crabron.: Clytochrysus; Tiphi.: Ti- 
phia clypeata; Ichnewmon.: Metopius terminalis. 

Diptera (6)—Syrph.: Sphaerophoria, Syrphus americanus; 
Tachin.: Peleteria; Sarcophag.: Sarcophaga sinuata ; Musc.: Lucilia 
sylvarum ; Anthomy.: Limnophora. 


Radicula palustris—Blooms May 6—October 16; 6 species and 
22 individuals observed, May 31, June 3; Mi, Y. 

Short-tongued Bees (4: 18, 2?)—Halict.: Chloralictus tegularis 
se, 2, versatus se, 9, zephyrus 2, Evylaeus pectoralis 5. 

Diptera (2: 4)—Syrph.: Mesogramma marginata sf, 3; An- 
thomy.: Phorbia platura 1. 


Sisymbrium canescens.—Blooms April 13—June 8; 13 visitors 
observed, May 2, 3; Mi, Y. 

Short-tongued Bees (11)—Halict. (2): Chloralictus pilosus se, 
fq, pruinosus se, sparsus, tegularis, versatus sc, fq, Evylaeus pecto- 
ralis, Oxystoglossa similis se, fq, Seladonia sc; Andren.:; Andrena 
nasonii ¢, Opandrena cressonii 9, se, personata J Q, se. 

Diptera (2)—Tachin.: Gymnosoma; Anthomy.: Phorbia acra. 


106 FLOWERS AND INSECTS—XXVI 


CUCURBITACEAE 
Cucurbita melopepo? (cult).—One visitor observed, July 11, 
September 21; Ma, Y. 
Long-tongued Bees (1)—Eucer.: Xenoglossa &. 


Cucurbita pepo (cult).—Blooms July 3—October 4; 6 visitors 
observed, July 3-September 21; Ma, Y. 

Long-tongued Bees (6)—Ap.: Apis se, fq; Bomb.: Bombus 
americanorum ¢ 9, se, fq, impatiens 9; Eucer.: Melissodes bimacu- 
lata 9, Peponapis J Q, se, ab, oligolege, Xenoglossa ¢ 2, se, ab. 


Kchinocystis lobata.—Blooms July 26—-September 27; 21 vis- 
itors observed on August 1: Pol, W. 

Long-tongued Bees (2)—Ap.: Apis; Eucer.: Melissodes bimacu- 
lata 9. 

Short-tongued Bees (1)—ZHalict.: Chloralictus versatus 9, se. 

Other Hymenoptera (3)—Scoli.: Elis 5-cineta, Seolia bicincta; 
Larr.: Tachytes elongatus. 

Diptera (15)—Syrph.: Allograpta ab, Mesogramma geminata, 
marginata, Milesia, Syritta fq, Syrphus americanus, ribesii; Sarco- 
phag.: Sarcophaga assidua; Musc.: Lucilia caesar, sericata, Musca, 
Phormia regina, Pseudopyrellia; Anthomy.: Ophyra, Phorbia acra. 


Sicyos angulatus.—Blooms August 18-September 25; 17 vis- 
itors observed, August 21-31; Pol, Y. 

Long-tongued Bees (3)—Ap.: Apis fq; Bomb.: Bombus im- 
patiens $; Hucer.: Melissodes bimaculata 9, se. 

Other Hymenoptera (9)—Sphec.: Ammobia ichneumonea, 
Chalybion, Sceliphron; Bembic.: Sphecius; Vesp.: Polistes annu- 
laris, pallipes fq, rubiginosus, Vespula germanica, maculata. 

Diptera (5)—Syrph.: Mesogramma marginata, polita; Tachin.: 
Winthemia; Musc.: Lucilia caesar, Musca. 


DIPSACEAE 


Dipsacus sylvestris (int).—Blooms July 1—August 29; 10 vis- 
itors observed on July 3, 28; Mas, R. 

Long-tongued Bees (2)—Bomb.: Bombus americanorum 9; 
Eucer.: Melissodes bimaculata ¢. 

Short-tongued Bees (2, 2)—Halict.: Agapostemon radiatus se, 
viridulus. 

Diptera (1)—Bombyli.: Exoprosopa fasciata fq. 

Lepidoptera (5)—Nymphal.: Anosia, Vanessa huntera; Papi- 
lion.: Jasoniades, Pontia; Hesperi.: Thanaos martialis. 


CHARLES ROBERTSON 107 


EBENACEAE 

Diospyros virginiana.—Blooms May 27—June 25; 29 species 
and 279 individuals observed, May 30—June 25; Ma, Y. 

On staminate flowers (17: 127) :— 

Long-tongued Bees (4:8)—Bomb.: Bombias separatus 9, sc, 2, 
Bombus impatiens ? 9, se, 4; Ceratin.: Ceratina 9, sc, 1,n; Nomad.: 
Holonomada affabilis 9, 1. 

Short-tongued Bees (10: 109, n)—Halict.: Agapostemon radi- 
atus 9, se, 1, Augochlora fervida 9, se, 3, viridula ¢ 9, se, 5, Chlor- 
alictus sparsus Q, ¢, 2, versatus ?, ¢, 7, zephyrus 9, se, 1, Curtisapis 
coriacea 9, se, 3, forbesii 9, c, 1, fuscipennis 9, se, 85, Oxystoglossa 
similis 9, ¢, 1. 

Diptera (3: 10, f, n)—Syrph.: Allograpta 1, Syrphus ameri- 
canus 1, ribesii 8. 

On staminate and pistillate flowers (9: 146) :— 

Long-tongued Bees (6: 138)—Ap.: Apis se, 78; Bomb.: Bombus 
americanorum 9°, 6; Megachil.: Osmia pumila 9, 2, Megachile 
mendica ¢ 9, 6; Eucer.: Tetralonia rosae ¢ 2, se, 31; Anthophor.: 
Anthemoessa ¢ 9, se, 15. 

Short-tongued Bees (2: 6, 2, se)—Helict.: Agapostemon viri- 
dulus 4, Oxystoglossa confusa 2. 

Lepidoptera (1: 2)—Hespert.: Euphyes verna 2. 

On pistillate flowers (3: 6) :— 

Long-tongued Bees (1: 2)—Bomb.: Bombias auricomus 9, 2. 

Short-tongued Bees (1: 1)—Halict.: Oxystoglossa pura Q, 1, n. 

Lepidoptera (1: 3)—Hesperi.: Limochores manataaqua 3, n. 


EUPHORBIACEAE 


Euphorbia corollata (9:74-5).—Blooms May 24-September 
27 ; 52 visitors observed, July 6-August 22; Pol, W. 

Short-tongued Bees (7)—Halict. (2): Chloralictus pilosus se, 
sparsus, versatus se, fq, Seladonia; Sphecodini: Sphecodes arvensis 
do 2, fq, in cop; Prosopid.: Prosopis pygmaea Q, ziziae ¢ . 

Other Hymenoptera (22)—Sphec.: Priononyx atrata, Sceli- 
phron; Bembic.: Megastizus; Scoli.: Elis 5-cineta fq; Philanth.: 
Eucerceris; Vesp.: Polistes pallipes, variatus; Eumen.: Ancistro- 
cerus campestris, Leionotus dorsalis; Crabron.: Anacrabro, Lin- 
denius errans, Protothyreopus bigeminus; Orybel.: Oxybelus pack- 
ardii, 4-notatus; Pemphredon.: Mimesa; Larr.: Larropsis; Pompil.: 
Priocnemoides fulvicornis, Psammachares relativus; Chrysid.: 
Hedychrum wiltii, Holopyga; Chalcid.: Leucospis; Ichneumon.: 
Ceratosoma. 


108 FLOWERS AND INSECTS—XXVI 


Diptera (21)—Syrph.: Allograpta ab, Mesogramma polita, 
Orthoneura nitida, Paragus bicolor fq, tibialis, Pipiza pulchella, 
Sphaerophoria ab, Syritta ab; Bombyli.: Anthrax alternata, Exo- 
prosopa fasciata, fascipennis; Tachin.: Alophora aeneoventris, 
Cistogaster pallasii fq, Cyphocera, Pachyophthalmus signatus, 
Phorantha purpurascens, Senotainia trilineata fq, Trichopoda pen- 
nipes; Sarcophag.: Helicobia helicis; Musc.: Morellia, Pseudopy- 
rellia. 

Lepidoptera (1)—Papilion.: Pontia. 

Hemiptera (1)—Core.: Chariesterus. 


Euphorbia preslii—Blooms June 30-October 26; 7 visitors 
observed, August 11, 24; Mi, W. 

Short-tongued Bees (1)—Halict.: Chloralictus tegularis 9, se. 

Other Hymenoptera (3)—Ozybel.: Notoglossa frontalis; Phil- 
anth.: Cerceris finitima; Chrysid.: Hedychrum parvum. 

Diptera (3)—Syrph.: Mesogramma marginata, Syritta, Bomb- 
ylu.: Sparnopolius. 

/ FUMARIACEAE 
m4 Dicentra cucullaria (2:125-6).—Blooms March 21—-May 5; 23 
visitors observed, April 9-30; Ma, W. 

Long-tongued Bees (14)—Ap.: Apis ¢, ab, n; Bomb. (9): 
Bombias auricomus fq, separatus fq, Bombus americanorum fq, 
consimilis, impatiens, ridingsii; Megachil.: Centrosmia ¢ 9, fq, 
Ceratosmia ¢ 9, Osmia collinsiae ¢'; Hucer.: Tetralonia belfragei J 
2, fq, dubitata ; Anthophor.: Anthophora <j, Emphoropsis ¢. 

Short-tongued Bees (1)—-Andren.: Andrena carlini ¢ 9. 

Diptera (1)—Bombyli.: Bombylius major fq. 

Lepidoptera (6, n)—Nymphal.: Anosia, Vanessa atalanta; 
Papilion.: Iphiclides, Jasoniades, Pieris; Hesperi.: Thanaos mar- 
tialis. 

GENTIANACEAE 

Frasera carolinensis (6:48, 8:142).—Blooms May 24-June 
22; 7 visitors observed, May 30-June 13; Ma, Y. 

Long-tongued Bees (4)—Ap.: Apis ab; Bomb.: Bombias sepa- 
ratus 9 8, ab; Bombus americanorum 9; Anthophor.: Anthemoessa 
oY, fq. 

Short-tongued Bees (1)—AHalict.: Curtisapis coriacea 9, sc, n. 

Other Hymenoptera (1)—Vesp.: Polistes pallipes. 

Lepidoptera (1)—Hespert.: Thorbyes pylades n. 


Gentiana andrewsii (13:577-8).—Blooms September 9—Octo- 
ber 20; 2 visitors observed, September 23, 29; Ma, R. 


CHARLES ROBERTSON 109 


Long-tongued Bees (1)—Bomb.: Bombus americanorum ¢ 9 9, 
ab. 
Coleoptera (1)—Melo.: Epicauta pennsylvanica gn, n. 


Gentiana puberula (8: 139-40).—One visitor observed, Septem- 
ber 29; Ma, R. 
Long-tongued Bees (1)—Bomb,: Bombus americanorum ¢ 9. 


Sabatia angularis.—Blooms July 11-September 9; 3 visitors 
observed, August 2, 5; Ma, R. 

Long-tongued Bees (2)—Ceratin.: Ceratina 9, se; Megachil.: 
Megachile brevis 9. 

Short-tongued Bees (1)—Halict.: Oxystoglossa similis 9, ¢, n. 


GERANIACEAE 

Geranium carolinianum (6: 272).—Blooms May 21—July 13; 13 
visitors observed, May 21, June 10; Mi, R. 

Long-tengued Bees (3)—Megachil.: Aleidamea simplex ¢ 9, fa, 
Diceratosmia 2; Eucer.: Tetralonia dilecta 9. 

Short-tongued Bees (7)—Halict. (9, se): Agapostemon radi- 
atus, Chloralictus sparsus, tegularis, Evylaeus pectoralis, fq, Oxy- 
stoglossa confusa fq; Prosopid.: Prosopis ziziae 2; Panurg.: Hetero- 
sarus 9, se. 

Other Hymenoptera (1)—Ewmen.: Leionotus illinoensis. 

Diptera (2)—Syrph.: Mesogramma marginata fq; Tachin.: 
Phorantha purpurascens. 


Geranium maculatum (2: 299-300).—Blooms April 13—June 4; 
44 visitors, April 23—May 24; Ma, R. 

Long-tongued Bees (24)—Ap.: Apis; Bomb. (2): Bombias 
separatus, Bombus americanorum, consimilis, impatiens, ridingsii, 
Psithyrus variabilis ; Ceratin.: Ceratina ¢ 2; Stelid.: Microstelis 9, n; 
Megachil.: Trypetini: Prochelostoma ¢ 9, n; Osmiini: Alcidamea 
simplex ¢, Ceratosmia 9, Monilosmia ¢ 9, Osmia atriventris , 
pumila 9; Coelioxyini: Coelioxys sayi ¢ 9; Nomad.: Centrias 
americanus ¢, Holonomada superba ¢ 9, Nomada denticulata 9, 
Xanthidium luteolum 9; Lucer.: Tetralonia belfragei ¢, dilecta 
ob 2, fq, rosae ¢; Anthophor.: Anthophora 9. 

Short-tongued Bees (11)—Halict. (2): Agapostemon viridulus, 
Augochlora viridula, Chloralictus pilosus n, versatus n, Curtisapis 
coriacea, Halictus lerouxii se, Oxystoglossa similis n; Andren.: 
Andrena geranii ¢ 9, fq, type, illinoensis ¢, n, Ptilandrena g. mac- 
ulati ¢ 9, se, ab, oligolege, type, polemonii ¢ 2, fq, n. 


110 FLOWERS AND INSECTS—XXVI 


Diptera (5, n)—Syrph.: Helophilus latifrons f; Empid.: Empis 
distans fq, humilis, otiosa, Pachymeria ab. 

Lepidoptera (4)—Lycaen.: Everes; Papilion.: Eurymus; Hes- 
pert.: Thanaos martialis; Sphing.: Hemaris thysbe. 


GRAMINEAE (anemophilous) 
Panicum virgatum.—One visitor observed, July 30. 
Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, ¢, 5. 
Poa pratensis.—One visitor observed, June 9. 
Short-tongued Bees (1)—Halict.: Chloralictus sparsus 9, ¢, 4. 
Zea mays.—One visitor observed, September 1. 
Long-tongued Bees (1)—Ap.: Apis e, 2. 


HYDROPHYLLACEAE 


Ellisia nyctelaea (6: 49-50).—Blooms April 20-June 21; the 
first 100 individuals, representing 26 species, were taken on May 
8-23; Mi, W. 

Long-tongued Bees (8:30)—Bomb.: Bombus consimilis 9, 1; 
Ceratin.: Ceratina ¢ 9, 9, Zaodontomerus 3“, 8; Megachil.: Pro- 
chelostoma ¢' 9, 5, Osmia atriventris ¢ 9, sc, 2, pumila J, 1; 
Nomad.: Gnathias cuneatus 9, 2; Hucer.: Tetralonia dilecta 0, 2. 

Short-tongued Bees (11: 55)—Halict. (9) : Chloralictus obscurus 
7, sparsus se, 4, tegularis 2, versatus 2, zephyrus 1, Evylaeus pec- 
toralis 1, 4-maculatus 10, Oxystoglossa confusa 8, Seladonia se, 7; 
Andren.: Iomelissa 9, 1, Opandrena personata ¢ Q, se, 12. 

Diptera (7: 15)—Syrph.: Mesogramma geminata f, 1, margi- 
nata f, 4, Pipiza femoralis f, 1, Rhingia 2; Bombyli.: Bombylius 
major 2, pulchellus 1; Tachin.: Siphona 4. 


Hydrophyllum appendiculatum (13:579-80).—Blooms May 
2— June 19; 46 visitors observed, May 3-June 19; Ma, R. 

Long-tongued Bees (20)—Ap.: Apis se, ab; Bomb.: Bombias 
auricomus 9, separatus 2 §, sc, ab, Bombus americanorum Q, ab, 
consimilis ?, impatiens ? %, fq, ridingsii 9 9, sc, ab, Psithyrus vari- 
abilis 9; Ceratin.: Ceratina 2; Megachil.: Trypetini: Prochelostoma 
?,se; Osmiini: Alcidamea simplex ¢', Ceratosmia ?, ab, Diceratosmia 
9, se, Hoplitis ¢ 9, se, Osmia pumila 9, sc, ab; Megachilini: Mega- 
chile brevis ¢'; Nomad.: Holonomada affabilis 2; Hucer.: Tetraio- 
nia belfragei ¢ 9, se, ab, dilecta <', fq, rosae ¢ 9, fq. 

Short-tongued Bees (10)—Halict. (2): Agapostemon radiatus 
se, Augochlora viridula, Chloralictus pilosus, versatus, Curtisapis 
coriacea sec, ab, Evylaeus pectoralis, 4-maculatus, Oxystoglossa con- 
fusa se, ab, Andren.: Andrena earlini 9, geranii ¢ 9, se, ab. 


CHARLES ROBERTSON lll 


Other Hymenoptera (2)—Humen.: Ancistrocerus tigris, Leiono- 
tus foraminatus. 

Diptera (10)—Syrph.: Criorhina intersistens, Eristalis flavipes, 
Rhingia sf, ab, Sphegina rufiventris f, n, Xylota chalybea; Empid.: 
Empis loripedis, nuda ab; Bombyli.: Aldrichia f, n; Conop.: 
Stylogaster biannulata: Anthomy.: Hylemyia inornata. 

Lepidoptera (4)—Nymphal.: Charidryas; Hesperi.: Ambly- 
scirtes, Atrytone zabulon, Pholisora hayhurstii. 

May 18, 1909, the following 7 species and 22 individuals were 
taken on the flowers: 

Long-tongued Bees (7:22)—Bomb.: Bombias auricomus 1, sep- 
aratus 8, Bombus americanorum 2, consimilis 1, impatiens 2; 
ELucer.: Tetralonia belfragei 4, dilecta 4. 


Hydrophyllum virginianum (13:579).—Blooms May 6—June 
1; 19 visitors observed May 8-27; Ma, W. 

Long-tongued Bees (12)—Bomb.: Bombias separatus 9, ab, 
Bombus americanorum @ 9, ab, consimilis 9, fq, impatiens 9, fq, 
ridingsii 2 9, ab, Psithyrus variabilis 2; Megachil.: Ceratosmia 9, 
sc; Nomad.: Gnathias ovatus 9, fq; xanthoparius ¢; Eucer.: Tetra- 
lonia belfragei 9, sc, dilecta 4, fq; Anthophor.: Anthemoessa ¢ 9. 

Short-tongued Bees (3)—Halict. (2): Curtisapis coriacea se, 
- Oxystoglossa confusa ¢, n; Andren.: Andrena geranii ¢ 9, se, fq. 

Other Hymenoptera (2)—Eumen.: Ancistrocerus tigris, suck- 
ing at holes made by Leionotus, Leionotus foraminatus, perforating. 

Diptera (2)—Syrph.: Rhingia f, n; Bombyli.: Bombylius 
atriceps. 

May 18, 1909, the following 6 species and 46 individuals were 
taken on the flowers: 

Long-tongued Bees (6:46)—Bomb.: Bombias separatus 28, 
Bombus americanorum 5, consimilis 2, impatiens 2, ridingsii 2; 
Eucer.: Tetralonia dilecta 7. 


HYPERICACEAE. 
Hypericum ascyron.—Blooms July 3-August 7; 2 visitors ob- 
served, July 5; Ma, Y. 
Long-tongued Bees (2, 3, ¢)—Bomb.: Bombus americanorum 4, 
consimilis 4. 


Hypericum cistifolium (7:109).—Blooms May 29-September 
7; 5 species and 17 individuals observed, June 21—July 15; Ma, Y. 

Long-tongued Bees (4:15, ¢)—Bomb.: Bombias auricomus 9, 1, 
separatus 2 &, 8, Bombus americanorum ? 9, 5; Megachil.: Chelo- 
stomoides 9, 1. 


112 FLOWERS AND INSECTS—XXVI 


Short-tongued Bees (1: 2)—Halict.: Agapostemon viridulus Q, 
c, 2. 


Hypericum punctatum.—Blooms June 26-September 7; 3 vis- 
itors observed, June 29, July 15, 30; Mi, Y. 

Long-tongued Bees (1)—Bomb.: Bombus americanorum 9, c. 

Short-tongued Bees (2, 9, ¢)—AHalict.: Chloralictus pilosus, 
versatus. 

IRIDACEAE 

Iris hexagona.—Blooms June 8-20; 2 visitors observed, June 
10; Ma, R. 

Long-tongued Bees (2)—Bomb.: Bombus americanorum 9, 1; 
Anthophor.: Anthemoessa (, 1. 


Iris versicolor (9:80).—Blooms May 17-—June 14; 10 visitors 
observed, May 20—June 5; Ma, R. 

Long-tongued Bees (5)—Bomb. (¢): Bombias auricomus, sep- 
aratus, Bombus americanorum fq; Hucer.: Tetralonia dilecta ¢ 9, 
se, ab, rosae J. 

Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, ¢, n. 

Lepidoptera (3, n)—Lycaen.: Chrysophanus; Hespert.: Limo- 
chores taumas, Polites. 

Coleoptera (1)—Scarabae.: Trichius piger n. 


Sisyrinchium angustifolium.—Blooms April 18—June 6; 15 vis- 
itors observed, May 10-28; Mi, W. 

Long-tongued Bees (4)—Bomb.: Bombias auricomus 9, sep- 
aratus 2; Megachil.: Osmia pumila 9; Nomad.: Holonomada 
superba <j. 

Short-tongued Bees (7, 2)—Halict.: Chloralictus pilosus se, 
pruinosus, versatus sc, ab, Oxystoglossa confusa se, ab, similis, Sela- 
donia se, fq; Andren.: Opandrena cressonii se. 

Diptera (4)—Syrph.: Helophilus latifrons, Mesogramma mar- 
ginata, Sphaerophoria; Bombyli.: Bombylius atriceps. 

Sisyrinchium gramineum.—Blooms May 11-—July 1; 1 visitor 
observed, May 28; Mi, R. 

Short-tongued Bees (1)—Halict.: Oxystoglossa similis 9, se. 


LABIATAE 
Agastache nepetoides (14:115-6).—Blooms July 24-Septem- 
ber 28; 15 visitors observed, August 2-September 2; Mas, Y. 
Long-tongued Bees (6)—Ap.: Apis ab; Bomb.: Bombias sep- 
aratus ¢ ¥, se, fg, Bombus americanorum ¢ ¥, se, ab, consimilis J, 
fq, impatiens 9, se, ab; Hucer.: Melissodes bimaculata ¢ 2. 


CHARLES ROBERTSON 113 


Short-tongued Bees (3, n)—Walict. (2): Chloralictus sparsus 
¢c, ab, versatus ¢, Oxystoglossa pura. 

Other Hymenoptera (1)—WSphec.: Sphex nigricans. 

Diptera (3)—Syrph. (f, n): Mesogramma geminata, Syritta; 
Bombyli.: Exoprosopa fasciata. 

Lepidoptera (2)—Nymphal.: Anosia; Papilion.: Pieris. 


Agastache scrophulariaefolia (14:116).—Blooms August 7- 
September 28; 5 visitors observed, August 31, September 1; Mas, R. 

Long-tongued Bees (4)—Ap.: Apis fq; Bomb.: Bombias auri- 
comus ¥, c, Bombus americanorum ¢ Y, se, fq; Megachil.: Mega- 
chile mendica 9. 

Diptera (1)—Bombyli.: Exoprosopa fasciata fq. 


Blephilia ciliata (14: 113-4).—Blooms May 15—July 4; 76 vis- 
itors observed, June 1—July 5; Mas, R. 

Long-tongued Bees (25)—Ap.: Apis ab; Bomb. (2): Bombias 
auricomus sc, separatus, Bombus americanorum sc, fq, consimilis, 
impatiens, Psithyrus variabilis; Ceratin.: Ceratina 9, se, ab; 
Megachil.: Trypetini: Neotrypetes barbatus 9, sc, fq, truncatus 9, 
se, ab; Osmiini: Alcidamea simplex 9, se, Diceratosmia ?, Hoplitis 
do, Osmia distincta 9; Megachilini: Cyphopyga ¢, fq, Megachile 
brevis ¢ 9, sc, mendica ¢ 9, se, fq, petulans ?, se, Sayapis pugnata 
o 9°, Xanthosarus ¢ 9; Coelioxyini: Coelioxys sayi ¢; Eucer.: 
Tetralonia dilecta ¢ 9, sec, rosae ¢; Anthophor.: Anthemoessa ¢, 
Clisodon Q, se. 

Short-tongued Bees (17)—WHalict. (2): Agapostemon viridulus 
se, ab, Augochlora fervida ec, Chloralictus pilosus se, sparsus sc, 
versatus se, ab, zephyrus, Curtisapis coriacea ¢, Evelaeus pectoralis, 
Halictus parallelus se, Odontalictus, Oxystoglossa similis se, fq, 
Seladonia se; Prosopid. (9, f, n): Prosopis pygmaea, ziziae; 
Andren.: Andrena geranii 9, sc, Trachandrena crataegi 2; Panurg.: 
Calliopsis andreniformis ¢ 9. 

Other Hymenoptera (4)—Sphec.: Priononyx atrata, Sphex 
nigricans, pictipennis, procera ab. 

Diptera (13)—Syrph.: Eristalis dimidiatus, flavipes, transversus 
fq, Helophilus latifrons, Volucella evecta f; Empid.: Parempis; 
Bombyli.: Anthrax parvicornis, Bombylius atriceps ab, Argyr- 
amoeba oedipus f, n, Toxophora; Conop.: Physocephala tibialis; 
Tachin.: Archytas aterrima, Epigrimyia polita. 

Lepidoptera (15)—Nymphal.: Anosia, Argynnis, Charidryas; 
Papilion.: Eurymus, Iphiclides, Jasoniades, Pieris, Pontia; 
Hesperi.: Achalarus, Epargyreus, Euphyes verna, Limochores 
manataaqua, taumas, Pholisora hayhurstii, Thorybes pylades. 


114 FLOWERS AND INSECTS—XXVI 


Coleoptera (2, sf, n)—WScarabae.: Trichius affinis, piger fq. 


Blephilia hirsuta (14: 114-5).—Blooms June 21—September 3; 
83 visitors observed, June 26—July 29; Mas, W. 

Long-tongued Bees (86)—Ap.: Apis ab; Bomb.: Bombias 
auricomus 9, separatus ¢' 9, fq, Bombus americanorum ¢ 9 9, fq, 
impatiens 3, ridingsii ¢, fq, Psithyrus laboriosus 9, variabilis 92; 
Ceratin.: Ceratina 9, sc, ab, Zaodontomerus 6; Megachil.: Try- 
petini: Neotrypetes truncatus 9, se; Osmiini: Aleidamea simplex 9; 
Megachilini: Chelostomoides ¢ 9, fq, Megachile brevis ¢ 2, generosa 
3d, mendica § 9, fq, petulans J 9, Sayapis sayi J, fg, Xanthosarus 
3; Coelioxyini: Coelioxys 8-dentata 3, rufitarsis ¢, sayi ¢ 9, fq; 
Epeol.: Triepeolus coneavus J, concolor ¢ 9, fq, cressonii ¢', remi- 
gatus 2; Hucer.: Epimelissodes obliqua ¢ 9, Florilegus 9, Melissodes 
agilis ¢, bimaculata ¢ 9, fq, comptoides ¢ 9, fq, trinodis ¢ 9, 
variabilis gj 9, Peponapis 6; Anthophor.: Amegilla 9, Clisodon 
oY; se. 

Short-tongued Bees (13)—Halict.: Agapostemon radiatus ¢ 9, 
se, fq, splendens J, viridulus 9, Augochlora viridula ¢, Chloralictus 
pilosus 9, sparsus ¢, ab, n, Evylaeus arcuatus 0, pectoralis 9, se, 
4-maculatus 9, ¢, n, Halictus lerouxii ¢ 9, Oxystoglossa confusa 
3 2, se, ab, pura 9; Prosopid.: Prosopis ziziae 9, f, n. 

Other Hymenoptera (6)—WSphec.: Sphex nigricans, procera, vul- 
garis; Scoli.: Elis 5-cincta; Humen.: Leionotus foraminatus fq; 
Pompil.: Ceropales fulvipes. 

Diptera (16)—Syrph.: Allograpta f, n, Eristalis transversus, 
Syritta f, fq, n, Tropidia albistylum, Xylota fraudulosa f, n; 
Empid.: Parempis; Bombyli.: Anthrax parvicornis, sinuosa f, n, 
Argyramoeba albofasciata f, n; Conop.: Oncomyia, Physocephala 
texana fq, tibialis, Stylogaster neglecta ab, Zodion obliquefasciatum ; 
Tachin.: Archytas analis; Musc.: Stomoxys. 

Lepidoptera (12)—Nymphal.: Anosia, Argynnis, Charidryas, 
Vanessa atalanta, cardui; Papilion.: Kurymus fq, Pieris, Pontia; 
Hesperi.: Epargyreus, Euphyes metacomet, Polites; Ctenuch.: 
Scepsis. 


Hedeoma pulegioides (14:108).—Blooms July 21—September 
28; 8 visitors observed, August 8, 11; Mi, R. 

Long-tongued Bees (1) Ceratin.: Ceratina 9. 

Short-tongued Bees (6)—Halict.: Chloralictus versatus 9, se, 
tegularis 2, se, Odontalictus ¢, Oxystoglossa confusa , similis ¢ 9, 
se, fq; Panurg.: Calliopsis andreniformis ~ 9, ab. 

Diptera (1)—Syrph.: Mesogramma marginata f, n. 


CHARLES ROBERTSON 115 


Isanthus brachiatus.—Blooms August 19—October 20; 3 vis- 
itors observed, August 29; Mi, R. 

Short-tongued Bees (3)—Halict. (2, ¢): Chloralictus pilosus, 
sparsus, versatus. 


Leonurus cardiaca (int, 14:123).—Blooms June 4—October 18; 
11 visitors observed, June 15—July 1; Ma, R. 

Long-tongued Bees (5)—Ap.: Apis ab; Bomb. (9): Bombias 
auricomus, Bombus americanorum; Ceratin.: Ceratina 9, se, fq; 
Anthophor.: Anthemoessa <. 

Short-tongued Bees (3)—Halict. (9, ¢, n): Chloralictus 
sparsus, versatus ab, Seladonia. 

Diptera (3)—Syrph. (f, n): Allograpta, Mesogramma gem- 
inata, Syrphus ribesii. 


Lycopus americanus (14: 103-4).—Blooms July 15—-September 
16; 140 visitors observed, August 13-September 7; Pol, W. 

Long-tongued Bees (13)—Ap.: Apis ab; Bomb.: Bombus 
americanorum 9, impatiens 9, fq, Psithyrus variabilis ¢; Ceratin.: 
Ceratina 9, se, fq; Megachil.: Megachilini: Megachile brevis 9, 
mendica ¢, petulans ¢'; Coelioxyini: Coelioxys germana 9; Epeol.: 
Triepeolus concolor 2; Eucer.: Melissodes comptoides ¢ 9, nivea 9, 
simillima 4. 

Short-tongued Bees (17)—Halict.: Agapostemon radiatus ¢ 9, 
Augochlora fervida ¢ ?, fq, Chloralictus sparsus 9, se, versatus 9, 
se, ab, Curtisapis coriacea ?, Halictus lerouxii 4, parallelus 4, Odon- 
talictus 9, Oxystoglossa similis 9, Seladonia ¢ 9; Prosopid.: Pro- 
sopis illinoensis 9, pygmaea 0, ziziae ¢ 9; Collet.: Colletes ameri- 
eanus J, latitarsis ¢; Panurg.: Calliopsis andreniformis 9, se, 
Perdita ¢ 9, in cop. 

Other Hymenoptera (36)—Sphec.: Ammobia ichneumonea fq, 
pennsylvanica, Isodontia apicalis, Priononyx atrata, thomae, Sceli- 
phron, Sphex gracilis, nigricans ab, pictipennis, procera; Bembic.: 
Bicyrtes ventralis, Megastizus fq, Stizus; Scoli.: Elis interrupta fq, 
5-cineta fq, Scolia bicineta; Philanth.: Eucerceris fq, Philanthus 
punctatus, ventilabris; Vesp.: Polistes annularis, pallipes, variatus, 
Vespula maculata; Eumen.: Eumenes fraternus, Leionotus for- 
aminatus, vagus; Larr.: Tachytes aurulentus, elongatus, mandi- 
bularis; Pompil.: Ceropales bipunctata, Lophopompilus philadel- 
phieus, Poecilopompilus interruptus, navus, Pompiloides margin- 
atus, Priocnemoides fulvicornis fq; Chrysid.: Hedychrum wiltii. 

Diptera (35)—Syrph.: Mesogramma marginata, Orthoneura 
nitida, Paragus bicolor, tibialis, Sphaerophoria, Syritta; Empid.: 


116 FLOWERS AND INSECTS—XXVI 


Parempis; Bombylt.: Exoprosopa fasciata, fascipennis; Conop.: 
Conops xanthopareus, Physocephala texana; Tachin.: Archytas 
analis ab, aterrima ab, hystrix, Cistogaster pallasii, Cyphocera, 
Distichona auriceps, Gymnosoma, Linnaemyia, Ocyptera lata, 
tenuis, Peleteria fq, Senotainia rubriventris, Siphoplagia anomala 
fq, Spallanzania ab, Trichopoda pennipes, Trichophora; Dezt.: 
Scotiptera; Sarcophag.: Helicobia helicis, Scarcophaga sinuata; 
Musc.: Compsomyia, Lucilia sericata, sylvarum, Pseudopyrellia; 
Anthomy.: Limnophora. 

Lepidoptera (8)—Nymphal.: Basilarchia archippus, Phyciodes; 
Lycaen.: Everes; Papilion.: Eurymus; Hesperi.: Ancyloxypha, 
Limochores taumas, Pholisora catullus; Ctenuch.: Scepsis. 

Coleoptera (1)—Lampyr.: Chauliognathus pennsylvanicus ab. 

On August 22, 24, 27, 29, 1910, the following 51 species and 383 
individuals were taken on the flowers: 

Long-tongued Bees (3:13)—Ap.: Apis 10; Megachil.: Mega- 
chile brevis 2; Hucer.: Melissodes comptoides 1. 

Short-tongued Bees (38:11)—Halict: Augochlora fervida 1, 
Chloralictus sparsus 1, versatus 9. 

Other Hymenoptera (17: 51)—Sphec.: Ammobia ichneumonea 
2, Priononyx atrata 3, thomae 2, Sceliphron 1, Sphex nigricans 9; 
Bembic.: Bicyrtes ventralis 1, Megastizus 6, Stizus 1; Scoli.: Elis 
5-cincta 6; Philanth.: Eucerceris 2; Vesp.: Polistes pallipes 3; 
Larr.: Tachytes aurulentus 1, elongatus 2, mandibularis 1; Pompil.: 
Lophopompilus philadelphicus 1, Poecilopompilus interruptus 2, 
Prioenemoides fulvicornis 8. i 

Diptera (24: 141)—Syrph.: Mesogramma marginata 1, Syritta 
2; Bombyli.: Exoprosopa fasciata 2; Conop.: Conops xanthopareus 
1; Tachin.: Archytas analis 24, aterrima 5, hystrix 1, Cistogaster 
pallasii 1, Cyphocera 2, Gymnosoma 3, Linnaemyia 1, Ocyptera 
tenuis 2, Peleteria 5, Senotainia rubriventris 5, Siphoplagia anomala 
8, Spallanzania 64, Trichophora 4; Sarcophag.: Helicobia helicis 2, 
Sarcophaga sinuata 4; Musc.: Compsomyia 1, Lucilia sericata 1, 
sylvarum 3, Pseudopyrellia 2; Anthomy.: Limnophora 1. 

Lepidoptera (8:5)—Nymphal.: Basilarchia archippus 1, Phy- 
ciodes 3; Hespert.: Limochores taumas 1. 

Coleoptera (1: 162)—Lampyr.: Chauliognathus pennsylvanicus 
162. 


Marrubium vulgare (int, 14: 122-3) —Blooms May 21—October 
5; 7 visitors observed, June 22, 25, 29, September 9; Ma, W. 

Long-tongued Bees (5)—Ap.: Apis ab; Bomb. (%): Bombias 
separatus, Bombus americanorum ; Ceratin.: Ceratina 2; Megachil.: 
Megachile ‘brevis 9. 


CHARLES ROBERTSON 117 


Diptera (1)—Bombyli.: Bombylius atriceps. 
Lepidoptera (1)—Papilion.: Pontia fq. 


Mentha arvensis (14: 102—3).—Blooms July 17—October 7; 25 
visitors observed, August 13—September 16; Pol, W. 

Short-tongued Bees (1)—Halict.: Oxystoglossa confusa ¢. 

Other Hymenoptera (9)—Sphec.: Ammobia nuda, Isodontia 
apicalis, Sphex gracilis, vulgaris; Bembic.: Bembix nubillipennis; 
Scoli.: Elis interrupta, 5-cineta fq; Philanth.: Eucerceris; Pompil.: 
Pompiloides marginatus. 

Diptera (12)—Syrph.: Milesia, Syritta, Tropidia quadrata; 
Empid.: Parempis; Bombyli.: Exoprosopa fascipennis; Conop.: 
Conops xanthopareus; Tachin.: Archytas analis, aterrima ab; 
Dexi.: Ptilodexia, Seotiptera; Musc.: Lucilia sylvarum, Pseudo- 
pyrellia. 

Lepidoptera (2)—Papilion.: Pieris; Hesperi.: Ancyloxypha. 

Coleoptera (1)—Lampyr.: Chauliognathus pennsylvanicus ab. 


Monarda bradburiana (14: 108-11).—Blooms May 7—June 16; 
37 visitors observed, May 10—June 16; Ma, R. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (14)—Ap.: Apis ab; Bomb.: Bombias auri- 
comus 9, fq, separatus 2, fq, Bombus americanorum Q, ab, impatiens 
2 ¥, ridingsii %, sc; Ceratin.: Ceratina 9, sc, ab, n; Megachil.: 
Megachilini: Megachile mendica 2; Coelioxyini: Coelioxys sayi 9, 
type; Eucer.: Tetralonia dilecta ¢ 9, fq, rosae ¢; Anthophor.: 
Anthemoessa ¢° 2, fq, Anthophora 9, Clisodon ¢. 

Short-tongued Bees (9, n)—Halict. (2): Chloralictus versatus 
e, Curtisapis coriacea ¢c, forbesii ec, Evylaeus pectoralis ¢, 4-macu- 
latus c, Oxystoglossa confusa ¢, ab, similis, at holes made by Leiono- 
tus; Prosopid.: Prosopis sayi ¢, f; Panurg.: Heterosarus parvus 
2, ¢, fq, type. 

Other Hymenoptera (1)—Zumen.: Leionotus foraminatus, per- 
forating. 

Diptera (1)—Bombyli.: Bombylius atriceps ab. 

Lepidoptera (11)—Nymphal.: Argynnis, Vanessa huntera; 
Papilion.: Euphoeades, Heraclides, Jasoniades, Laertias; Hesperi.: 
Atrytone zabulon, Epargyreus, Euphyes metacomet, Thorybes 
bathyllus, pylades. 


Monarda fistulosa (14: 11-3).—Blooms July 7—September 24; 
61 visitors observed, July 16—September 10; Mas, R. 
Birds (1)—Trochil.: Trochilus. 


118 FLOWERS AND INSECTS—XXVI 


Long-tongued Bees (21)—Ap.: Apis, at holes made by Leiono- 
tus, ab, n; Bomb.: Bombias auricomus 4 @ %, ab, separatus J 
9, ab, Bombus americanorum ¢ 2 %, ab, consimilis 9, fq; Ceratin.: 
Ceratina 9, e and at holes made by Leionotus, fq, n; Megachil.: 
Megachilini: Cyphopyga ¢', Xanthosarus 2; Coelioxyini: Coelioxys 
rufitarsis 2; E'peol.: Triepeolus concavus 9, concolor, 9, nevadensis 
3d, remigatus 9; Hucer.: Anthedon ¢ 9, ab, Epimelissodes obliqua 
3 2, Melissodes agilis 4, bimaculata ¢ 9, se, fq, enici J, comptoides 
3 Q, trinodis 9, variabilis 9, se, type. 

Short-tongued Bees (¥, 9, at holes made by Leionotus)— 
Halict.: Agapostemon radiatus, Chloralictus pilosus, versatus, also 
e, Halictus lerouxii, Odontalictus, Oxystoglossa confusa, Seladonia. 

Other Hymenoptera (3, n)—Sphec.: Sphex pictipennis, at holes ; 
Eumen.: Leionotus dorsalis, perforating, foraminatus, perforating. 

Diptera (6)—Bombyli.: Exoprosopa decora, fasciata ab, Argyr- 
amoeba albofasciata f, n, Systoechus fq; Conop.: Physocephala 
tibialis, Stylogaster biannulata n. 

Lepidoptera (23)—Nymphal.: Anosia, Argynnis, Basilarchia 
archippus, Speyeria, Vanessa atalanta, cardui, huntera; Papilion.: 
Euphoeades, Eurymus, Heraclides, Laertias ab, Papilio ab, Pontia; 
Hespert.: Achalarus, Atrytone delaware, zabulon, Epargyreus, 
Euphyes metacomet, Pholisora catullus, hayhurstii, Thorybes 
bathyllus; Sphing.: Hemaris axillaris, thysbe. 


Nepeta cataria (int, 14: 116-7).—Blooms June 19—November 
19; 73 visitors observed, June 26—-September 10; Mas, R. 

Long-tongued Bees (28)—Ap.: Apis ab; Bomb.: Bombias 
auricomus 9, separatus ¢ 9, fq, Bombus americanorum ¢ @ 9, faq, 
consimilis $, se, fq, impatiens ¢ 9, fq, ridingsii ¢'; Ceratin.: Cera- 
tina 9; Megachil.: Trypetini: Neotrypetes truncatus 2; Osmiini: 
Alcidamea simplex 9; Megachilini: Anthemois ¢ 9, Chelostomoides 
3 2, ab, Megachile brevis ¢ 9, fq, generosa J 9, mendica 9, petulans 
9, Oligotropus <j, Sayapis pugnata d'; Coelioxyini: Coelioxys 8- 
dentata 3, sayi J 2; Nomad.: Centrias americanus 9; Epeol. (d'): 
Epeolus bifasciatus, Triepeolus concavus, concolor fq, remigatus; 
Eucer.: Epimelissodes obliqua 6, Melissodes bimaculata ¢ 9, fq, 
variabilis ¢. 

Short-tongued Bees (10)—Halict.: Agapostemon radiatus ¢ 9, 
fq, viridulus ?, Chloralictus pilosus ¢' 2, sparsus 9, ¢, versatus 9, 
se, fq, Halictus lerouxii ¢ 9, fq, parallelus 9, Odontalictus 9, Sela- 
donia ¢ 9; Panurg.: Calliopsis andreniformis 9. 

Other Hymenoptera (11)—Sphec.: Priononyx atrata, Sphex 
gracilis, nigricans, pictipennis, procera, vulgaris; Scoli.: Elis 5- 
cincta; Ewmen.: Leionotus anormis, dorsalis, foraminatus, fulvipes. 


CHARLES ROBERTSON 119 


Diptera (12)—Syrph.: Eristalis tenax, Helophilus latifrons, 
Rhingia, Sphaerophoria, Syritta; Bombyli.: Anthrax fulvohirta, 
parvicornis; Jachin.: Archytas analis, aterrima, Cyphocera, Linn- 
aemyia, Ocyptera lata. 

Lepidoptera (11)—Nymphal.: Argynnis, Phyciodes, Vanessa 
atalanta, huntera; Papilion.: Eurymus, Pieris, Pontia ab; Hespert.: 
Epargyreus, Pholisora catullus, Thanaos juvenalis, martialis. 

Hemiptera (1)— Lygae.: Lygaeus. 


Nepeta hederacea (int, 14: 117-8).—Blooms March 24—June 
21; 22 visitors observed, March 25—May 20; Ma, R. 

Long-tongued Bees (12)—Ap.: Apis ab; Bomb. (2): Bombus 
americanorum ab, consimilis, pennsylvanicus, ridingsii; Ceratin.: 
Ceratina ¢ 9, ab; Megachil.: Alcidamea simplex ¢, Osmia collinsiae 
do, pumila ¢ 9, fq; Nomad.: Holonomada superba ?, fq; Eucer.: 
Tetralonia dilecta ¢ 2, ab; Anthophor.: Anthemoessa ¢ 9, ab. 

Short-tongued Bees (2, 2?)—Halict.: Augochlora viridula, Oxy- 
stoglossa confusa. 

Diptera (2)—Syrph.: Rhingia; Bombyli.: Bombylius atriceps 
ab. 

Lepidoptera (6, n)—Papilion.: Eurymus ab, Pieris; Hesperi.: 
Atrytone zabulon fq, Pamphila hobomok, Polites; Noctu.: Plusia 
simplex. 


Physostegia virginiana (14: 121-2).—Blooms July 19—October 
10; 7 visitors observed, August 23-September 22; Ma, R. 

Birds (1)—Trochil.: Trochilus 2. 

Long-tongued Bees (4)—Bomb.: Bombus americanorum ¢ 9 ¥, 
20, consimilis %, se, 1; Megachil.: Megachile brevis gf, 1; Eucer.: 
Melissodes bimaculata ¢, 1. 

Lepidoptera (2, n)—Nymphal.: Anosia 1; Papilion.: Eurymus 1. 


Prunella vulgaris (14: 120-1).—Blooms July 6-November 19; 
23 visitors observed, July 11—October 3; Ma, R. 

Long-tongued Bees (9)—Bomb.: Bombias separatus ¢, Bombus 
americanorum %, ab, consimilis %, impatiens ¢ ¥, se, fq; Ceratin.: 
Ceratina 2; Megachil.: Megachile mendica ¢; Eucer.: Melissodes 
bimaculata ¢ 2, comptoides 2; Anthophor.: Clisodon ¢ 9. 

Short-tongued Bees (3, 9)—Halict.: Oxystoglossa confusa, Sela- 
donia n; Panurg.: Calliopsis andreniformis. 

Other Hymenoptera (1)—Scoli.: Scolia bicincta. 

Diptera (2)—Bombyli.: Exoprosopa fasciata ; Tachin.: Archytas 
aterrima. 


120 FLOWERS AND INSECTS—XXVI 


Lepidoptera (8, n)—Papilion.: Eurymus, Pieris, Pontia; Hes- 
pert.: Ancyloxypha, Atrytone delaware, Limochores taumas, Pholi- 
sora hayhurstii, Polites. 


Pycnanthemum flexuosum (14: 107).—Blooms June 19-Sep- 
tember 12; 268 visitors observed, June 19—August 3; Mis, W. 

Long-tongued Bees (44)—Ap.: Apis ab; Bomb.: Bombias auri- 
comus 6 2 Y, se, fq, in cop, type, scutellaris $, separatus ¢ 9 9, 
se, fg, Bombus americanorum ¢ 9? 9, impatiens 9, 9, Psithyrus 
laboriosus 2, variabilis 2; Ceratin.: Ceratina 2; Stelid.: Stelidium 
2, type; Megachil.: Osmiini: Alcidamea simplex 9; Megachilini: 
Megachile brevis ¢ 9, fq, generosa ¢' 9, mendica ¢ 9, ab, petulans 
do 2, se, fq, Oligotropus J, Sayapis sayi J 9, fq, Xanthosarus J 9; 
Coelioxyini: Coelioxys alternata ¢', germana ¢' 9, modesta , 8-den- 
tata gj 9, ab, sayi J 9, fq; Nomad.: Cephen 2; Pasit.: Holeopasites 
illinoensis ¢ 9; Hpeol.: Epeolus bifasciatus %, fq, lectoides 9, type, 
Triepeolus concavus ¢ 9, fq, concolor ¢ 9, ab, cressonii ¢, lunatus 
3 , fg, nevadensis ¢ 9, remigatus ¢ 9, fq, simplex ¢; Melect.: 
Melecta j'; Eucer.: Anthedon ¢' 2, Epimelissodes illinoensis 9, 
obliqua J 9, fq, Florilegus 2, Melissodes agilis ¢' 2, bimaculata ¢ 2, 
ab, comptoides 4, cereopsis 9, variabilis ¢. 

Short-tongued Bees (38)—Halict.: Agapostemon radiatus ¢ 9, 
ab, texanus 9, Augochlora fervida ¢ 9, se, viridula ¢ 9, Chloral- 
ictus pilosus ¢', pruinosus 0, sparsus 9°, tegularis 9, se, versatus ¢ , 
se, fq, Curtisapis forbesii ¢ 9, fq, Evylaeus arcuatus , pectoralis 
3 2, se, Halictus lerouxii ¢ 9, ab, parallelus ¢ 9, fq, Odontalictus 
3 9, ab, Oxystoglossa confusa J 9, similis ¢' 9, fq, Seladonia ¢ 9; 
Sphecodini: Dialonia 9, Machaeris stygia ¢ 9, ab, Proteraner , 
Sphecodes arvensis ¢ 9, ab, heraclei ¢, minor 9, Sphecodium eres- 
sonii 9, pyenanthemi 9, type; Prosopid.: Prosopis pygmaea 9, fq, 
sayi J, ziziae ¢' 9, fq; Collet.: Colletes eulophi ¢ 9, fq, latitarsis 
3 2, nudus J 9, type, similis 2, type, willistonii ¢ 9, ab; Nomi: 
Paranomia ¢ ?, ab; Andren.: Trachandrena obscura 9, type, quin- 
tilis 9, fq, type; Panurg.: Calliopis andreniformis 9. 

Other Hymenoptera (89)—Sphec.: Ammobia ichneumonea fa, 
nuda, pennsylvanica, Isodontia apicalis, Palmodes, Priononyx at- 
rata fq, thomae, Sceliphron, Sphex gracilis in cop, nigricans fq, 
pictipennis, procera; Bembic.: Bembix nubillipennis fq, spinolae, 
Bicyrtes 4-fasciata fq, ventralis, Megastizus, Stictia, Stictiella fq, 
Stizus; Scolt.: Campsomeris, Elis interrupta, obscura ab, 5-cincta 
ab, thoracica, Scolia bicineta, nobilitata; Philanth.: Cerceris bicor- 
nuta, clypeata, compacta, compar, finitima, fumipennis, robertsonii, 
rufinoda, Eucerceris, Philanthus punctatus fq, ventilabris fq; 


CHARLES ROBERTSON 121 


Vesp.: Polistes annularis, rubiginosus, variatus; Eumen.: Ancistro- 
cerus campestris, capra, unifasciatus, Eumenes fraternus in cop, 
Leionotus anormis fq, arvensis, clypeatus type, dorsalis, forami- 
natus ab, fulvipes, fundatus, histrionalis, molestus, scrophulariae, 
vagus, ziziae, Monobia, Pterochilus, Zendalia zendaloides, Zethus; 
Crabron.: Hypocrabro, Protothyreopus rufifemur, Pseudocrabro 
fq, Solenius ab; Oxrybel.: Notoglossa americana, emarginata, fron- 
talis, Oxybelus laetus, packardii; Larr.: Astatus unicolor, Noto- 
gonidea, Tachysphex acutus, belfragei, mundus, Tachytes aurulen- 
tus, elongatus ab, harpax, pepticus; Nysson.: Pseudoplisus 
phaleratus; Pompil.: Arachnoproctonus, Batizonus, Ceropales 
robinsonii, Lophopompilus philadelphicus, Poecilopompilus navus, 
Pompiloides americanus, marginatus, Priocnemoides fulvicornis fq; 
Chrysid.: Hedychrum violaceum. 

Diptera (54)—Stratiomy.: Odontomyia cincta, Stratiomyia 
meigenii; Syrph.: Eristalis aeneus, dimidiatus, latifrons fq, tenax 
fq, transversus, vinetorum fq, Helophilus latifrons, Mallota cimbici- 
formis, illinoensis type, Mesogramma marginata ab, Milesia, Ortho- 
neura nitida fq, Sphaerophoria, Spilomyia longicornis, Syritta ab, 
Tropidia mamillata; Empid.; Parempis ab; Mida.: Midas clavatus 
ab, tibialis; Bombyli.: Anthrax alternata, fulvohirta fq, parvicornis, 
Argyramoeba albofasciata f, n, Exoprosopa emarginata fq, fasciata, 
fascipennis ab; Conop.: Conops brachyrrhynchus, xanthopareus ab, 
in cop, Oncomyia, Physocephala texana, tibialis ab, Zodion fulvi- 
frons, obliquefasciatum in cop; T’achin.: Alophora aeneoventris ab, 
fumosa, Archytas analis ab, aterrima, Cistogaster occidua, pallasii 
fq, Clytiomyia, Epigrimyia polita, Linnaemyia, Ocyptera lata, 
tenuis, Paradidyma, Phorantha humeralis, Spallanzania, Xantho- 
melana; Musc.: Compsomyia, Phormia terraenovae, Pseudopyrellia ; 
Anthomy.: Limnophora. 

Lepidoptera (29)—Nymphal.: Argynnis, Basilarchia archippus, 
Charidryas, Euptoieta, Hypatus, Junonia, Neonympha, Phycoides, 
Vanessa atalanta, cardui, huntera ab; Lycaen.: Chrysophanus, 
Everes, Strymon, Uranotes; Papilion.: Eurema, Eurymus, Laertias, 
Pieris, Pontia, Zerene; Hesperi.; Epargyreus, Limochores taumas, 
Pholisora catullus, Polites, Thanaos juvenalis, martialis, Thorybes 
bathyllus; Ctenuch.: Scepsis. 

Coleoptera (9)—Cerambyc.: Typocerus sinuatus fq; Curculion.: 
Centrinus scutellum-album fq; Mordell.; Mordella marginata, 8- 
punctata; Rhipiphor.: Rhipiphorus dimidiatus, flavipennis, lim- 
batus ab; Scarabae.; Trichius affinis, piger. 

Hemiptera (5)—Caps.: Calocoris; Lygae.: Lygaeus, Oneopeltus 
fq, Ortholomus; Pentatom.: Euchistus ictericus. 


122 FLOWERS AND INSECTS—XXVI 


Pycnanthemum pilosum (14:106)—Blooms July 5—Septem- 
ber 8; 113 visitors observed, July 21-August 29; Mis, W. 

Long-tongued Bees (17)—Ap.: Apis ab; Bomb.: Bombus ameri- 
canorum 9; Ceratin.: Ceratina 2; Megachil.: Megachilini: Megachile 
brevis , mendica ¢, petulans 4, fp, Xanthosarus d'; Coelioxyini 
(J): Coelioxys germana fq, 8-dentata, sayi; Epeol.: Epeolus 
bifasciatus ¢' 2, ab, Triepeolus concavus ¢' 9, fq, remigatus 2, faq, 
simplex ¢; Hucer.: Epimelissodes obliqua 7, Melissodes agilis 0, 
comptoides 5 2, ab. | 

Short-tongued Bees (16)—AHalict.: Agapostemon radiatus J, 
ab, Augochlora viridula ¢ 9, fq, Chloralictus pilosus 9, sparsus Q, 
se, ab, versatus ¢ 9, se, ab, zephyrus 9, Evylaeus arcuatus ¢ Q, 
pectoralis 9, Halictus lerouxii ¢ 9, ab, parallelus ¢ 2, fq, Odontal- 
ictus ¢ 9, ab, Seladonia ¢ 9, ab; Sphecodini: Sphecodes arvensis ¢ 
°, fq, Sphecodium cressonii ¢'; Prosopid.: Prosopis ziziae 9; Pan- 
urg.: Calliopsis andreniformis ¢ 9, se, fq. 

Other Hymenoptera (43)—Sphec.: Ammobia ichneumonea, 
nuda, Isodontia apicalis, Priononyx atrata, Sphex gracilis fq, nigri- 
cans, pictipennis fg, procera, vulgaris; Bembic.: Bembix nubilli- 
pennis ab, Bicyrtes 4-fasciata, ventralis, Stictia, Stictiella; Scolv.: 
Elis interrupta, 5-cineta ab, Scolia bicinecta; Philanth.: Cerceris 
compacta, frontata, fumipennis fq, Eucerceris, Philanthus pune- 
tatus fq, ventilabris fq; Vesp.: Polistes variatus; Ewmen.: Leio- 
notus anormis, arvensis, dorsalis, foraminatus ab, fundatus, his- 
trionalis, molestus fq, scrophulariae, vagus fq, Pterochilus, Zendalia 
zendaloides type; Crabron.: Anacrabro, Solenius; Oxybel.: Noto- 
glossa frontalis; Larr.: Tachytes aurulentus, elongatus, mandib- 
ularis; Pompil.: Prioenemoides fulvicornis; Chrysid.: Hedychrum 
wiltii. 

Diptera (31)—Stratiomy.: Stratiomyia meigenii; Syrph.: 
Eristalis dimidiatus, tenax, transversus, Syritta ab; Bombyli.: 
Anthrax fulvohirta, Exoprosopa emarginata, fascipennis ab, Geron 
rufipes, Systoechus; Conop.: Conops xanthopareus fq, Oncomyia, 
Physocephala tibialis, Zodion fulvifrons, obliquefasciatum ; Tachin.: 
Archytas analis ab, aterrima, Cistogaster occidua, pallasii, Ocyptera 
tenuis, Phorantha magna, purpurascens, Senotainia trilineata, 
Siphona, Spallanzania, Trichopoda pennipes, Trichophora; Sar- 
cophag.: Helicobia helicis; Musc.: Compsomyia, Phormia regina, 
Stomoxys. 

Lepidoptera (4)—Nymphal.: Phyciodes; Papilion.: Pontia; 
Hespert.: Epargyreus, Thanaos martialis. 

Coleoptera (2)—Rhipiphor.: Rhipiphorus dimidiatus in cop, 
limbatus. 


CHARLES ROBERTSON 123 


Pycnanthemum virginianum (14:104-6).—Blooms July 12- 
September 7; 66 visitors observed, July 12—September 6; Mis, W. 

Long-tongued Bees (10)—Ap.: Apis ab; Bomb.: Bombias 
seutellaris %, separatus 2; Megachil.: Neotrypetes truncatus 9, 
Coelioxys 8-dentata 9; Epeol.: Epeolus bifasciatus 4, Triepeolus 
concolor ¢ 9°, fq; Lucer.: Epimelissodes atripes 2, Florilegus ¢, 
Melissodes comptoides ¢ 9. ' 

Short-tongued Bees (15)—Halict.: Agapostemon radiatus ¢, 
ab, Augochlora fervida 2, viridula ¢ 9, Chloralictus sparsus ¢, fq, 
versatus 6° 9, ab, Evylaeus arcuatus ¢, pectoralis 9, Halictus 
lerouxii ¢ 9, parallelus 9, Odontalictus 92, Seladonia ¢ 9, ab; 
Sphecodini: Drepanium 9, Sphecodes arvensis ¢ 9, ab; Nomi: 
Paranomia ¢; Panurg.: Calliopsis andreniformis ¢ 9. 

Other Hymenoptera (23)—Sphec.: Ammobia nuda, pennsyl- 
vanica, Sphex gracilis, nigricans, pictipennis, procera ab, vulgaris; 
Bembic.: Bicyrtes 4-fasciata, Megastizus, Stictiella; Scoli.: Elis 
interrupta, 5-cinecta, Scolia bicincta; Philanth.: Cerceris fumi- 
pennis, Eucerceris fq; Eumen.: Eumenes fraternus, Leionotus 
arvensis, dorsalis, foraminatus fq, Zethus; Ozrybel.: Notoglossa 
americana; Larr.: Tachytes aurulentus, elongatus. 

Diptera (14)—Syrph.: Eristalis tenax, Sphaerophoria, Syritta; 
Bombyli.: Exoprosopa fasciata, fascipennis ab, Systropus; Conop.: 
Oncomyia, Zodion fulvifrons; Tachin.: Alophora aeneoventris, 
Archytas analis ab, Cistogaster occidua, Spallanzania fq, Tricho- 
poda pennipes; Musc:: Compsomyia fq. 

Lepidoptera (2)—Nymphal.: Phyciodes fq; Papilion.: Pontia. 

Coleoptera (1)—Rhipiphor.: Rhipiphorus limbatus. 

Hemiptera (1)—Lygae.: Lygaeus. 


Scutellaria canescans (14: 119-20).—Blooms July 7—Septem- 
ber 19; 13 visitors observed, July 31—August 26; Ma, R. 

Long-tongued Bees (6)—Bomb.: Bombias auricomus 9%, sep- 
aratus %, Bombus americanorum ¢ 9, se, ab, consimilis 9, se, im- 
patiens ©, se; Ceratin.: Ceratina 9, fq, n. 

Short-tongued Bees (3)—Halict. (9, sucking at holes made by 
Leionotus) : Chloralictus sparsus, versatus, Oxystoglossa confusa. 

Other Hymenoptera (1)—Eumen.: Leionotus foraminatus, per- 
forating. 

Diptera (1)—Bombyli.: Exoprospa fasciata n. 

Lepidoptera (2, n)—Hesperi.: Atrytone zabulon, Epargyreus. 


Scutellaria lateriflora—Blooms July 18—September 28, 1 visitor 
observed, July 20; Ma, R. 


124 FLOWERS AND INSECTS—XXVI 


Long-tongued Bees (1)—Eucer.: Melissodes bimaculata 9. 


Scutellaria parvula (14:118-9).—Blooms May 8—June 29; 16 
visitors observed, May 19-June 3; Ma, R. 

Long-tongued Bees (6)—Bomb.: Bombus americanorum 9; 
Ceratin.: Ceratina 3 9, ab, Megachil.: Osmiini: Alecidamea simplex 
+d 2, se, ab, Diceratosmia 9, Osmia pumila 9 sc; Megachilini: Mega- 
chile brevis ¢. 

Short-tongued Bees (5)—Halict. (9): Chloralictus pilosus, 
pruinosus fq, type, tegularis fq, Evylaeus pectoralis, Odontalictus. 

Diptera (2, f, n)—Syrph.: Sphaerophoria, Syritta. 

Lepidoptera (8, n)—Hesperi.: Ancyloxypha, Pholisora catullus 
fq, Polites. 


Scutellaria versicolor (14: 120).—Blooms June 7—July 26; 10 
visitors observed, June 14-July 10; Ma, R. 

Long-tongued Bees (7)—Bomb. (? 9): Bombus americanorum, 
consimilis se, fq; Ceratin.: Ceratina 9, sec, n; Eucer.: Tetra- 
lonia dilecta 2; Anthophor.: Anthemoessa ¢ 9, se, fq, Anthophora 
9, se, Clisodon Q, se. 

Diptera (1)—Syrph.: Rhingia f, n. 

Lepidoptera (2, n)—Papilion.: Euphoeades, Papilio. 


Stachys palustris (14: 124-5).—Blooms June 2-September 28; 
21 visitors observed, June 2-September 10; Ma, R. 

Long-tongued Bees (10)—Bomb.: Bombias auricomus 4, 
Bombus americanorum ¢ 9, fq, consimilis 9, impatiens 9; Ceratin.: 
Ceratina 2, ab; Megachil.: Alcidamea simplex 9, se, fq, Megachile 
brevis 2, ab; Nomad.: Holonomada superba 2; Hucer.: Melissodes 
bimaculata ¢' 9, fq; Anthophor.: Anthemoessa ~. 

Short-tongued Bees (3)—Halict. (2): Agapostemon viridulus, 
Chloralictus versatus c, n; Panurg.: Calliopsis andreniformis . 

Diptera (3)—Syrph. (f, n): Mesogramma marginata, Syrphus 
ribesii; Bombyli.: Systoechus. 

Lepidoptera (5, n)—Papilion.: Iphiclides; Hesperi.: Ancy- 
loxypha, Limochores taumas; Noctu.: Plusia precationis, simplex. 


Teucrium canadense (14:101-2).—Blooms June 19-Septem- 
ber 7; 45 visitors observed, June 30-August 19; Mas (Ma), R. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (28)—Ap.: Apis ab; Bomb.: Bombias scutel- 
laris %, separatus ¢' ? 3, fq, Bombus americanorum ¢ Y, se, faq, 
consimilis 9, impatiens §, fq, Psithyrus variabilis 9; Ceratin.: 
Ceratina 9, fq, n; Megachil.: Osmiini: Alcidamea simplex 9; 


CHARLES ROBERTSON 125 


Megachilini: Megachile brevis ¢ 9, se, fq, mendica ?, Sayapis sayi 
& 2, Xanthosarus ¢f 2; Coelioxyini: Coelioxys germana ?; Epeol.: 
Triepeolus concavus <4, concolor ¢ 9, fq, simplex ¢; ELucer.: Epi- 
melissodes obliqua ¢ 9, Florilegus ¢ 9, sc, fq, Melissodes agilis 3, 
bimaculata ¢ 9, ab, comptoides 4, fq, petalostemonis 9, trinodis 9, 
variabilis 4, vernoniana ¢ 9; Anthophor.: Amegilla ¢, Anthe- 
moessa 9. 

Short-tongued Bees (4)—JWHalict.: Agapostemon viridulus 9, 
Halictus lerouxii ¢ 2, Oxystoglossa confusa 2, n, pura 9, n. 

Other Hymenoptera (1)—Bembic.: Bembix nubillipennis. 

Diptera (5)—Bombyli.: Exoprosopa fasciata, fascipennis, Sys- 
toechus; Conop.: Physocephala texana, Stylogaster biannulata. 

Lepidoptera (6)—JLycaen.: Everes; Papilion.: Eurymus, Laer- 
tias; Hesperi.: Atrytone delaware, Polites; Sphing.: Hemaris 
axillaris. 

LAURACEAE 

Sassafras variifolium (9: 164—5).—Blooms April 27—May 4; 91 
visitors observed, April 27—May 4; Pol, Y. 

Long-tongued Bees (1)—Megachil.: Osmia pumila 9. 

Short-tongued Bees (16)—Halict. (9): Chloralictus cressonii, 
illinoensis, sparsus se, fq, versatus sc, zephyrus se, Evylaeus arcu- 
atus, Halictus lerouxii; Sphecodini: Sphecodes arvensis, minor 
type; Andren: Andrena carlini 9, salictaria gf, Parandrena d, 
Pterandrena lauracea 2, type, Trachandrena claytoniae ¢, fq, 
forbesii 9, hippotes J. 

Other Hymenoptera (12)—Vesp.: Polistes pallipes, variatus; 
Pompil.: Cryptocheilus conicus; Ichnewmon.: Glypta rufiscutellaris, 
Idiolespa, Ophion, Pimpla annulipes; Tenthredin.: Dolerus bicolor, 
Hylotoma macleayi, Macrophya epinota, Monophadnus, Opistho- 
neura. 

Diptera (57)—Bibion.: Bibio femoratus fq, pallipes fq; Simuli.: 
Simulium; Stratiomy.: Sargus; Syrph.: Brachypalpus frontosus, 
Chilosia ecapillata, punctulata fq, Chrysogaster ontario, Criorhina 
umbratilis fq, Eristalis dimidiatus, transversus, Helophilus similis, 
Melanostoma obscurum, Mesogramma marginata, Myiolepta strigil- 
ata, Orthoneura nitida, Platychirus hyperboreus, quadratus, 
Psilota, Sphaerophoria, Syrphus americanus, ribesii, torvus ; 2mpid.: 
Empis avida, compta type, otiosa, Rhamphomyia exigua, limbata, 
mutabilis fq, piligeronis type, priapulus fq, ravida fq, in cop, type, 
sordida; Tachin.: Euphorocera claripennis, Gonia capitata, Lin- 
naemyia, Panzeria, Tachina robusta; Sarcophag.: Boettcheria, 
Cynomyia fq, Helicobia helicis, Sareophaga cimbicis, sinuata; 


126 FLOWERS AND INSECTS—XXVI 


Musc.: Lucilia caesar, Morellia fq, Phormia regina, Pseudopyrellia ; 
Anthomy.: Calythea, Coenosia antica, Homalomyia prostrata, 
Phorbia acra ab, platura ab; Agromyz.: Agromyza aeneoventris, 
latipes; Lonchae.: Lonchaea aberrans; Oscin.: Chlorops assimilis; 
Scatophag.: Scatophaga. 

Lepidoptera (1)—Nymphal.: Vanessa huntera. 

Coleoptera (38)—Coccinel.: Megilla; Lampyr.: Telephorus bi- 
lineatus fq; Oedemer.: Asclera puncticollis. 

Hemiptera (1)—Corimmelaen.: Corimelaena pulicaria. 


LEGUMINOSAE 

Amorpha canescens (3: 80-1).—Blooms June 6—July 24; 49 
visitors observed, June 12-28; Mis, R. 

Long-tongued Bees (10)—Bomb.: Bombias separatus 9, Bombus 
americanorum  &, se, Psithyrus variabilis 2; Ceratin.: Ceratina 9; 
Megachil. (2): Trypetini: Neotrypetes truncatus sc; Osmiini: 
Alcidamea simplex, Hoplitis se, fq; Megachilini: Megachile brevis 
se; Coelioxyini: Coelioxys 8-dentata, sayi. 

Short-tongued Bees (15)—Halict.: Agapostemon texanus 9, 
Chloralictus pilosus 9, sc, sparsus 9, se, tegularis 9, versatus Q, se, 
fq, Curtisapis forbesii ¢', Halictus lerouxii ¢ 9, se, fq, parallelus , 
Oxystoglossa confusa @, similis ¢' 9, sc, Seladonia ¢ 9, se; Prosopid. 
(9, f, n): Prosopis pygmaea, ziziae; Collet.: Colletes eulophi ¢ 9, 
se, fq; Panurg.: Calliopsis andreniformis 9. 

Other Hymenoptera (16)—Sphec.: Isodontia apicalis, Priononyx 
atrata fq, thomae, Sphex nigricans fq, pictipennis, procera, vul- 
garis; Bembic.: Bicyrtes ventralis; Scolv.: Elis 5-cineta; Philanth.: 
Cerceris bicornuta, Philanthus ventilabris; Hwmen.: Kumenes fra- 
ternus, Leionotus anormis, dorsalis; Larr.: Tachytes elongatus, 
pepticus. 

Diptera (5)—Syrph. (f, n): Paragus bicolor, Sphaerophoria, 
Tropidia mamillata; Bombyli.: Anthrax sinuosa f, n, Toxophora. 

Coleoptera (3, f, n)—Chrysomel.: Diabrotica atripennis, 12- 
punctata; Melo.: Macrobasis. 


Amorpha fruticosa.—Blooms May 10—June 4; 9 species and 18 
individuals taken on May 27; Mis (Mas), R. 

Long-tongued Bees (3: 10)—Ceratin.: Ceratina 9, se, 8; Mega- 
chil.: Coelioxys sayi ¢', 1; Nomad.: Centrias americanus 9, 1. 

Short-tongued Bees (?, 6: 8)—Halict.: Chloralictus sparsus se, 
1, tegularis sc,.1, Evylaeus pectoralis sc, 3; Prosopid.: Prosopis 
saniculae 1, sayi 1, ziziae 1. 


CHARLES ROBERTSON 127 


Amphicarpa pitcheri (3: 200-1).—Blooms August 16-Septem- 
ber 10; 4 visitors observed, August 22-30; Ma, R. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (3)—Bomb.: Bombus americanorum ¢ Q, 
consimilis 9, sc, impatiens 9, se. 


Apios tuberosa.—Blooms July 3—August 26; 2 visitors observed, 
July 20, August 12; Ma, R. 

Long-tongued Bees (2, 9)—Megachil.: Megachile brevis se, 
mendica fq. 


Astragalus canadensis (16:162).—Blooms July 3—August 26; 
10 visitors observed, July 7—-August 2; Ma, Y. 

Long-tongued Bees (7)—Ap.: Apis; Bomb.: Bombias auri- 
comus 9 %, se, fq, separatus §, Bombus americanorum 9? 9, se, fq, 
Stelid.: Anthidium psoraleae ¢ 9, fq, in cop; Megachil.: Anthemois 
2; Eucer.: Melissodes bimaculata ¢. 

Short-tongued Bees (1)—Halict.: Halictus parallelus 9. 

Other Hymenoptera (1)—Eumen.: Leionotus fundatus. 

Lepidoptera (1)—Hesperi.: Thanaos martialis n. 


Astragalus mexicanus (3:199, 16:162).—Blooms April 15- 
May 12; 16 visitors observed, April 19—May 4; Ma, Y. 

Long-tongued Bees (11)—Bomb. (2): Bombias auricomus se, 
separatus, Bombus americanorum ab; Megachil.: Osmia atriventris 
o 2, se, illinoensis Q, se, collinsiae 9, se, fq, pumila 9, se, fq; Eucer.: 
Tetralonia dilecta ¢ 9, ab, dubitata 9, sc, ab, robertsonii 2, se, type; 
Anthophor.: Anthophora ¢ 9, se, fq. 

Diptera (1)—Bombyli.: Bombylius major. 

Lepidoptera (4, n)—Papilion.: Eurymus, Papilio; Hesperi.: 
Thanaos icelus, juvenalis. 


. Baptisia bracteata (5:176-7)—Blooms April 30-May 19; 4 
visitors observed, May 1-19; Ma, W. 
Long-tongued Bees (4)—Bomb.: Bombias separatus 2, Bombus 
americanorum 92; Megachil.: Centrosmia 9, sc; Eucer.: Tetralonia 
dilecta ¢ 9, fq. 


Baptisia leucantha (3:79).—Blooms June 10-September 8; 2 
visitors observed, July 11 and often; Ma, W. 

Long-tongued Bees (1)—Bomb.: Bombus americanorum 9, se, 
ab. 

Lepidoptera (1)—Papilion.: Callidryas n. 


Cassia chamaecrista (3: 202-3).—Blooms June 28—October 5; 
24 visitors observed, July 9-September 15; Ma, Y. 


128 FLOWERS AND INSECTS—XXVI 


Long-tongued Bees (18, c)—Ap.: Apis fq; Bomb.: Bombias 
auricomus ¢ %, ab, scutellaris 2 3, separatus 9, ab, Bombus ameri- 
canorum &, ab, consimilis 9, impatiens 2 $; Megachil. (2): Mega- 
chile brevis fq, c and cutting petals, generosa ab, mendica, petulans, 
Xanthosarus; Hucer.: (2), Epimelissodes atripes ab, oligolege, 
Florilegus, Melissodes bimaculata, comptoides ab, variabilis; Antho- 
phor.: Amegilla 9, oligolege. 

Short-tongued Bees (5, 9, esp, n)—Halict.: Agapostemon radia- 
tus, texanus, Augochlora fervida, Chloralictus pilosus, versatus. 

Diptera (1)—Syrph.: Milesia fsp, n. 

Petiolar nectaries.—On sixteen days, June 29-August 26, the 
following 67 visitors were observed :— 

Ants (4 $)—Formic.: Camponotus castaneus Formica fusea, 
schaufussi fq, Lasius fq. 

Short-tongued Bees (6)—Halict.: Chloralictus sparsus ¢ 9, ab, 
tegularis 4’, versatus ¢ 9, fq, zephyrus <4, Evylaeus pectoralis <j, 
Oxystoglossa similis ¢. 

Other Hymenoptera (438)—Sphec.: Chalybion, Chlorion, 
Sceliphron; Philanth.: Cerceris kennicottii, rufinoda; Humen.: 
Leionotus foraminatus; Crabron.: Lindenius robertsoni type, Rho- 
palum scutellatum; Ozybel.: Notoglossa americana, frontalis; 
Pemphredon.: Psen; Larr.: Astatus unicolor, Lyroda, Notogonidea, 
Tachysphex acutus, belfragei fq, mundus, tarsatus, Tachytes 
maestus, mergus, obscurus, sericatus; Nysson.: Nysson rufiventris, 
Zanysson aurinotus fq, plesia; Pompil.: Arachnoproctonus, Poecilo- 
pompilus navus, Prionenemis, Priocnemoides fulvicornis, termi- 
natus, Psammochares pretiosa, relativus; Tiphi.: Tipha punctata, 
robertsoni; Mutill. (¢'): Mutilla hexagona fq, sayi, Sphaeroph- 
thalma; Chrysid.: Chrysis intricata, texana, Tetrachrysis montana, 
Holopyga; Chalcid.: Perilampus cyaneus; Bracon.: Apanteles 
terminalis. 

Diptera (13)—Taban.: Tabanus; Syrph.: Mesogramma margi- 
nata, polita, Syritta; Conop.: Onecomyia; Tachin.: Chaetoplagia, 
Exorista confinis, Senotainia rubriventris, trilineata; Sarcophag.: 
Helicobia helicis; Musc.: Pseudopyrellia; Ortal.: Rivellia 4-fas- 
ciata; Oscin.: Chlorops assimilis. 

Hemiptera (1)—Caps.: Lygus. 


Cassia marilandica (3: 203-4).—Blooms July 1—August 26; 3 
visitors observed, July 21; Ma, Y. 

Long-tongued Bees (1)—Bomb.: Bombus americanorum 9, e. 

Short-tongued Bees (2, 9, esp, n)—Halict.: Chloralictus sparsus, 
Oxystoglossa confusa. 


CHARLES ROBERTSON 129 


Petiolar nectaries.—Five visitors observed on July 21, 30. 

Ants (4, %)—Formic.: Camponotus herculaneus 7, Formica 
schaufussi 1, Lasius 2; Myrmic.: Cremastogaster 3. 

Coleoptera (1)—Coccinell.: Coccinella 9-notata 1. 


Cercis canadensis (3:201-2).—Blooms April 4—May 17; 52 
visitors observed, April 21—May 5; Mi, R. 

Long-tongued Bees (22)—Ap.: Apis se, ab; Bomb.: (9): 
Bombias auricomus ab, separatus sc, Bombus americanorum, con- 
similis, impatiens; Ceratin.: Zaodontomerus ¢; Megachil. (se) : 
Centrosmia ¢ 9, Ceratosmia ¢ 9, ab, Diceratosmia 9, Osmia atri- 
ventris 9, pumila 9, fq; Nomad.: Gnathias cuneatus 4, Holonomada 
affabilis 9, Nomada denticulata 4, sayi 2, Xanthidium luteoloides 
2, luteolum ¢ 9; Eucer.: Tetralonia belfragei 4, dilecta ¢ 9, se, in 
cop, ab; Anthophor.: Anthophora ¢ 9, fq, Emphoropsis ¢. 

Short-tongued Bees (19)—Halict. (2): Agapostemon radiatus, 
Augochlora viridula, Chloralictus pilosus, sparsus se, ab, versatus 
se, fq, zephyrus, Curtisapis coriacea, forbesii, Evylaeus arcuatus, 
Halictus lerouxii sc, fq, Oxystoglossa confusa, pura, Seladonia se, 
ab; Collet.: Colletes inaequalis ¢ 9, se, ab; Andren.: Andrena ear- 
lini 9, se, mandibularis 9, se, sayi 2, se, Opandrena ecressonii 4, 
Trachandrena claytoniae Q, sc. 

Other Hymenoptera (1)—Vesp.: Polistes variatus. 

Diptera (4)—EHmpid.: Empis otiosa fq, Pachymeria, Rham- 
phomyia priapulus; Bombyli.: Bombylius major. 

Lepidoptera (5, n)—Nymphal.: Vanessa atalanta, huntera; 
Lycaen.: Everes; Hesperi.: Thanaos icelus, juvenalis. 

Coleoptera (1)—Cerambyc.: Molorchus n. 


Crotalaria sagittalis—Blooms June 14-October 9; 8 visitors 
observed, June 16—July 9; Ma, Y. 

Long-tongued Bees (6)—Bomb.: Bombus americanorum %; 
Megachil.: Megachilini: Megachile brevis ¢ 9, se, ab, generosa 9, 
Sarogaster 9, se; Coelioxyini: Coelioxys 8-dentata 2, sayi 9. 

Lepidoptera (2, n)—Lycaen.: Everes; Papilion.: Pieris. 


Desmodium bracteosum (3: 83).—Blooms July 11—August 29; 
3 visitors observed, August 13, 22; Ma, R. 

Long-tongued Bees (3, ¢)—Bomb.: Bombus americanorum 9%; 
Megachil.: Megachile brevis 2; Lucer.: Melissodes bimaculata 9. 


Desmodium canadense (3:83).—Blooms June 13-September 
7; 6 visitors observed, July 11—August 25; Ma, R. 


130 FLOWERS AND INSECTS—XXVI 


Long-tongued Bees (6, ¢)—Bomb.: Bombias separatus 9, 
Bombus americanorum 9, fq; Megachil (2): Megachile brevis fq, 
mendica, petulans; Hucer.: Melissodes bimaculata 9. 


Desmodium canescens.—Blooms July 11—-September 7; 1 vis- 
itor observed, September 1; Ma, R. 
Long-tongued Bees (1)—WMegachil.: Megachile brevis 9, e. 


Desmodium dillenii (3:83)—Blooms July 30-September 7; 
5 visitors observed, August 2-September 2; Ma, R. 

Long-tongued Bees (5, c)—Bomb.: Bombus americanorum 9; 
Megachil. (2) : Megachile brevis, mendica, petulans; Hwucer.: Melis- 
sodes bimaculata 9. 


Desmodium grandiflorum.—Blooms June 22—August 17; 1 vis- 
itor observed, July 9; Mi, W. 
Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, e¢. 


Desmodium illinoense.—Blooms June 5—August 10; 9 visitors 
observed, June 30-July 9; Ma, R. 

Long-tongued Bees (7)—Bomb. (9, ¢): Bombias auricomus, 
Bombus americanorum; Megachil.: Osmiini: Alcidamea simplex 
©, ¢; Megachile brevis fq, mendica, Sarogaster ; Coelioxyini: Coeli- 
oxys 8-dentata, explor, n. 

Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, esp, n. 

Lepidoptera (1)—Lycaen.: Everes, explor, n. 


Desmodium marilandicum (8:83).—Blooms August 22—Sep- 
tember 3; 1 visitor observed, August 22; Ma, R. 
Short-tongued Bees (1)—Panurg.: Calliopsis andreniformis Q, e¢. 


Desmodium paniculatum (38: 83).—Blooms July 17-September 
23 ; 8 visitors observed, August 7-September 10; Ma, R. 

Long-tongued Bees (6, ¢)—Bomb.: Bombus americanorum 9, 
impatiens $; Megachil. (Q°): Megachile brevis, mendica, petulans; 
Eucer.: Melissodes bimaculata 9. 

Short-tongued Bees (2, 9, ¢)—Panurg.: Calliopsis andrenifor- 
mis; Nomi.: Paranomia. 


Desmodium sessilifolium (3: 83)—Blooms July 18-September 
18; 2 visitors observed, August 14, 15; Ma, R. 

Long-tongued Bees (1)—Megachil.: Megachile brevis 9, ¢. 

Short-tongued Bees (1)—Halict.: Chloralictus versatus 2, esp, n. 


Gleditsia triacanthos.—Blooms May 4—June 5, 18 visitors ob- 
served, May 24—June 3; Mis, Y. 


CHARLES ROBERTSON 131 


Long-tongued Bees (2)—Ap.: Apis se, fq; Bomb.: Bombias sepa- 
ratus 9, sc. 

Short-tongued Bees (6, 9)—Halict.: Agapostemon radiatus se, 
Chloralictus illinoensis, sparsus; Andren.: Andrena dunningii, 
Opandrena personata, Trachandrena claytoniae sc. 

Diptera (5)—Syrph.: Eristalis dimidiatus, Mesogramma gemi- 
nata. Myiolepta varipes; Hmpid.: Rhamphomyia mutabilis; 
Anthomy.: Phorbia platura. 


Gymnocladus dioica (16: 165).—Blooms May 7—June 1; 5 vis- 
itors observed, May 10; Ma, W. 

Birds (1)—Trochil.: Trochilus, 

Long-tongued Bees (3)—Bomb.: Bombus americanorum 9, fq, 
impatiens 9, se; Eucer.: Tetralonia dilecta ¢. 

Lepidoptera (1)—Papilion.: Euphoeades. 


Lespedeza capitata (10: 231).—Blooms July 23—September 17; 
4 visitors observed, August 14-26; Ma, R. 

Long-tongued Bees (2)—Bomb.: Bombus americanorum 9%; 
Megachil.: Megachile brevis 9, se. 

Short-tongued Bees (1)—Panurg.: Calliopsis andreniformis ¢. 

Lepidoptera (1)—Papilion.: Eurymus n. 


Lespedeza procumbens (10: 230).—Blooms July 17—Septem- 
ber 21; 9 visitors observed, August 7-25; Ma, R. 

Long-tongued Bees (4)—Megachil. (9, sc): Megachile brevis, 
mendica; Pasit.: Holeopasites illinoensis ¢ 9°, fq, type; Eucer.: 
Melissodes bimaculata 9. 

Short-tongued Bees (3)—Halict. (2, se): Chloralictus versatus, 
Oxystoglossa confusa; Panurg.: Calliopsis andreniformis ¢ 9. 

Diptera (1)—Bombyli.: Systoechus. 

Lepidoptera (1)—Lycaen.: Everes n. 


Lespedeza virginica (10: 230-1).—Blooms July 22—September 
14; 21 visitors observed, August 7-September 7; Ma, R. 

Long-tongued Bees (11)—Bomb.: Bombus americanorum ¢ 9, 
se, fq ; Megachil.: Megachilini: Megachile brevis ¢ 9, sc, ab, petulans 
Q, se, Xanthosarus 2; Coelioxyini: Coelioxys germana 9; Epeol.: 
Triepeolus concavus 9, simplex 92; Eucer.: Melissodes autumnalis ¢, 
comptoides 9, nivea ¢ 9, se; Anthophor.: Amegilla 9. 

Short-tongued Bees (5)—Halict. (¢): Odontalictus, Oxysto- 
glossa confusa, similis; Collet.: Colletes americanus ¢; Panurg.: 
Calliopsis andreniformis ¢ 9. 

Diptera (1)—Anthomy.: Hylemyia laevis. 


132 FLOWERS AND INSECTS—XXVI 


Lepidoptera (4, n)—JZycaen.: Everes fq, Uranotes; Papilion.: 
Eurymus; Hesperi.: Limochores taumas. 


Melilotus alba (6:4734).—Blooms June 1—October 18; 153 
visitors observed, June 20—July 4; Pol (Mis), W. 

Long-tongued Bees (23)—Ap.: Apis ab; Bomb.: Bombias auri- 
comus Q, scutellaris 9, separatus 2 9, fq, Bombus americanorum 
© &, fq, Psithyrus variabilis 2; Ceratin.: Ceratina 9, sc; Megachil.: 
Trypetini: Neotrypetes truncatus 9; Osmiini: Alcidamea simplex 
2, se; Megachilini: Megachile brevis ¢ 9, se, fq, petulans J, 
6-dentata °f, Xanthosarus 4’; Coelioxyini: Coelioxys 8-dentata ¢ 9, 
ab, rufitarsis 9, sayi 9; Xylocop.: Xylocopa ¢ 9; Nomad.: Centrias 
americanus 9, Holonomada affabilis ¢ 9, superba 9, fq; Epeol.: 
Epeolus bifasciatus ¢' 2, ab; Hucer.: Tetralonia dilecta 2; Antho- 
phor.: Anthemoessa <. 

Short-tongued Bees (21)—Halict.: Agapostemon radiatus 9, 
viridulus 9, Chloralictus albipennis 9, sc, pilosus ¢, pruinosus 4, 
versatus ¢ 9, se, ab, Evylaeus arcuatus 9, se, pectoralis ¢', Halictus 
lerouxii ¢ 9, sc, parallelus ¢ 9, Odontalictus 9, se, Oxystoglossa 
similis ¢' 9, Seladonia 9; Sphecodini: Sphecodes arvensis ¢ 9, fq, 
Sphecodium cressonii 2; Collet.: Colletes eulophi J 9, fq, latitarsis 
3 Q, willistonii 2; Nomi.: Paranomia ¢ 9; Macropid.: Macropis 
3 2, fq; Panurg.: Calliopsis andreniformis ¢ 9, se. 

Other Hymenoptera (52)—Sphec.: Ammobia ichneumonea, 
pennsylvanica, Isodontia apicalis, macrocephala, Priononyx atrata, 
thomae, Sceliphron, Sphex nigricans, pictipennis fq, procera, vul- 
garis; Bembic.: Bembix nubillipennis, Bicyrtes ventralis, Stizus fq; 
Scoli.: Elis 5-cineta; Philanth.: Cerceris bicornuta, clypeata, com- 
pacta, finitima, prominens, Philanthus ventilabris; Vesp.: Polistes 
rubiginosus fq, variatus; Humen.: Ancistrocerus tigris, Eumenes 
belfragei, fraternus, Leionotus anormis fq, arvensis, clypeatus, dor- 
salis fq, foraminatus fq, fulvipes, histrionalis, megaera, ziziae, 
Monobia; Crabron.: Solenius fq; Oxybel.: Notoglossa americana; 
Larr.: Tachytes elongatus ; Pompil.: Anoplius illinoensis, Batizonus, 
Ceropales bipunctata fq, elegans, fulvipes, Episyron, Lophopom- 
pilus atrox, Poecilopompilus navus, Pompiloides americanus, margi- 
natus, Priocnemoides fulvicornis, Psammochares relativus; Tipht.: 
Tiphia vulgaris. 

Diptera (36)—Taban.: Chrysops striatus; Stratiomy.: Stra- 
tiomyia meigenii; Syrph.: Allograpta, Eristalis aeneus fq, latifrons, 
Helophilus latifrons, Platychirus quadratus, Sphaerophoria, Syritta, 
Syrphus americanus; Empid.: Parempis; Conop.: Conops brachyr- 
rhyncus fq, xanthopareus, Oncomyia, Physocephala texana, Stylo- 


CHARLES ROBERTSON 133 


gaster biannulata, Zodion nanellum; Tachin.: Archytas analis, 
aterrima Belvosia bifasciata, Cistogaster occidua, Cyphocera ab, 
Euphorocera claripennis, Linnaemyia ab, Ocyptera lata, fq, Pachy- 
ophthalmus floridensis, signatus, Senotainia rubriventris, Spallan- 
zania, Trichophora, Winthemia; Sarcophag.: Helicobia helicis, 
Sarcophaga cimbicis; Musc.: Morellia, Phormia regina, Pseudo- 
pyrellia. 

Lepidoptera (14, n)—Nymphal.: Anosia, Vanessa atalanta, hun- 
tera; Lycaen.: Chrysophanus, Cyaniris, Strymon, Uranotes; 
Papilion.: Callidryas, Iphiclides, Papilio, Pontia; Hesperi.: Epar- 
gyreus, Limochores taumas; Sesi.: Sesia 6-fasciata. 

Coleoptera (5)—Cerambyc.: Typocerus sinuatus; Curculion.: 
Centrinus picumnus, scutellum-album fq; Mordell.: Mordella mar- 
ginata; Scarabae.: Trichius piger. 

Hemiptera (2)—Lygae.: Lygaeus; Pentatom.: Podisus. 


Petalostemum candidum.—Blooms June 20—August 30; 30 vis- 
itors observed, July 8-19; Mis, W. 

Long-tongued Bees (4)—Ap.: Apis; Bomb.: Bombias aurico- 
mus 9, scutellaris $, separatus ? 9%, fq. 

Short-tongued Bees (11)—Halict.: Agapostemon radiatus 9, 
Augochlora fervida 9, Chloralictus sparsus 9, se, fq, versatus 9, se, 
ab, Halictus lerouxii ¢ 9, se, fq, parallelus ¢ 2, fq, Odontalictus 9, 
Oxystoglossa confusa 9, se, similis 9, fq, Seladonia ¢ 9, fq: 
Prosopid.: Prosopis ziziae 9. 

Other Hymenoptera (7)—Sphec.: Ammobia ichneumonea, 
Priononyx atrata; Bembic.: Bicyrtes 4-fasciata; Scoli.: Elis inter- 
rupta, 5-cincta ab; Philanth.: Cerceris bicornuta, Philanthus ven- 
tilabris. 

Diptera (7)—Syrph.: Allograpta, Tropidia quadrata; Mida.: 
Midas clavatus ; Conop.: Conops xanthopareus fq, Zodion nanellum ; 
Tachin.: Archytas analis; Musc.: Compsomyia. 

Lepidoptera (1)—Lycaen.: Everes. 


Petalostemum purpureum (3: 81-2).—Blooms June 27—-August 
10; 94 visitors observed, July 1-August 2; Mas, R. 

Long-tongued Bees (37)—Ap.: Apis se, ab; Bomb.: Bombias 
auricomus 9 ¥, se, scutellaris %, sc, fq, separatus ¢ 2 &, se, ab, 
Bombus americanorum ¢ 2 %, se, ab, impatiens 2 ¥, se, fq, Psithy- 
rus variabilis 9; Ceratin: Ceratina 2, se; Megachil.: Trypetini: 
Neotrypetes truncatus 9, sec; Osmiini: Alcidamea simplex Q, se, 
Hoplitis 2, se, fq; Megachilini: Megachile brevis ¢ 9, se, ab, 6-den- 
data 4, Sayapis sayi 9, Xanthosarus ¢ 9, se, fq; Coelioxyini: 


134 FLOWERS AND INSECTS—XXVI 


Coelioxys alternata 9, germana 9, 8-dentata J 9, fq, rufitarsis ¢ 9, 
sayi 9; Xylocop.: Xylocopa 9; Epeol.: Epeolus bifasciatus 2, Tri- 
epeolus concavus ¢ 9, fq, concolor ¢ Q, ab, lunatus J, remigatus 9; 
Eucer.: Epimelissodes obliqua 6 9, se, fq, Melissodes agilis ¢ Q, 
bimaculata ¢ 9, se, ab, comptoides ¢ 9, fq, petalostemonis , se, fq, 
type, trinodis 4, variabilis ¢ 9, se, fq, vernoniana ¢' 9, Tetralonia 
dilecta 2, se, Xenoglossodes 2; Anthophor.: Amegilla ¢. 

Short-tongued Bees (18)—Halict.: Agapostemon radiatus 9, 
splendens 9, texanus 6 9, viridulus 9, se, ab, Augochlora fervida Q, 
se, fq, Chloralictus albipennis 9, ¢, fq, pilosus 9, sc, pruinosus Q, 
versatus 9, se, fq, Halictus lerouxii J 9, se, fq, parallelus J 9, se, ab, 
Odontalictus ?, se, Oxystoglossa confusa Q, se, similis 9, se, ab, Sela- 
donia 2, sc, ab; Collet.: Colletes albescens 9, se, oligolege, robertsonii 
3 &, se, oligolege, type; Nomi.: Paranomia <. 

Other Hymenoptera (15)—Sphec.: Ammobia ichneumonea, 
Priononyx atrata, thomae, Sphex gracilis, nigricans fq, pictipennis, 
procera, vulgaris; Bembic.: Bembix nubillipennis, spinolae; Scolt.: 
Campsomeris, Elis 5-cincta fq; Philanth.: Cerceris bicornuta, 
Philanthus ventilabris; Hwmen.: Eumenes fraternus. 

Diptera (12)—Syrph.: Allograpta, Eristalis latifrons, Helo- 
philus latifrons, Mesogramma marginata, Sphaerophoria, Tropidia 
quadrata; Bombyli.: Exoprosopa ‘fasciata, Systoechus; Conop.: 
Oncomyia, Physocephala texana, Zodion obliquefasciatum; Sarco- 
phag.: Sarcophaga cimbicis. 

Lepidoptera (6)—Lycaen.: Everes; Papilion.: Hurymus, Zerene ; 
Hespert.: Limochores taumas, Pholisora catullus, Polites. 

Coleoptera (4)—Cerambyc.: Typocerus sinuatus; Chrysomel.: 
Diabrotica 12-punctata; Melo.: Epicauta pennsylvanica, trichrus. 

Hemiptera (2)—Caps.: Calocoris; Pentatom.: Euschistus 
ictericus. 


Psoralea onobrychis (3:79-80).—Blooms May 27—July 31; 55 
visitors observed, June 15-July 16; Mas, R. 

Long-tongued Bees (27)—Ap.: Apis fq; Bomb.: Bombias auri- 
comus 9, scutellaris 9, separatus ? 9, se, fg, Bombus americanorum 
3S %, impatiens 9; Ceratin.: Ceratina 2; Stelid.: Anthidium 
psoraleae ¢ 9, fq, type; Megachil.: Osmiini: Alcidamea simplex Q, 
se, Diceratosmia 9, Osmia atriventris 9; Megachilini: Chelostom- 
oides ¢ 9, se, ab, type, Megachile addenda ¢ 9, se, ab, brevis J , se, 
ab, generosa ¢ 9, se, fq, mendica J 9, se, ab, petulans 3, fq, Oligotro- 
pus 3, ab, Xanthosarus ¢ 9; Coelioxyini: Coelioxys germana 0, 
modesta ¢ 9, fq, 8-dentata J 9, fq, sayi ¢ 9, fq; Hpeol.: Epeolus in- 
terruptus ?, type; Eucer.: Florilegus ¢, Melissodes bimaculata ¢ 9, 
Tetralonia dilecta 9. 


CHARLES ROBERTSON 135 


Short-tongued Bees (8)—dHalict.: Agapostemon radiatus ¢ 9, 
se, Curtisapis coriacea 9, Evylaeus arcuatus ?, Halictus lerouxii 9, 
Seladonia ¢ 9, in cop; Collet.: Colletes brevicornis 2, fq, eulophi 
& 2, se, ab, in cop; Panurg.: Calliopsis andreniformis ¢ 9, se, ab, 
in cop. 

Other Hymenoptera (7)—Sphec.: Priononyx atrata, thomae, 
Sphex gracilis; Scoli.: Elis 5-cincta; Ewmen.: Leionotus arvensis, 
dorsalis, Pterochilus. 

Diptera (7)—Syrph.: Tropidia mamillata; Bombyli.: Anthrax 
parvicornis, sinuosa fsp, Bombylius atriceps, Exoprosopa fasciata ; 
Conop.: Physocephala tibialis, Stylogaster biannulata. 

Lepidoptera (6, n)—Papilion.: Laertias, Pontia; Hesperi.: 
Epargyreus, Thanaos juvenalis; Sphing.: Hemaris thysbe; Noctu.: 
Schinia. 


Robinia pseudacacia (int).—Blooms April 21—May 28; 11 vis- 
itors observed, May 9-25; Ma, R. 

Birds (1)—Trochil.: Trochilus ab. 

Long-tongued Bees (7)—Ap.: Apis; Bomb. (2): Bombias auri- 
comus fq, scutellaris, separatus, Bombus americanorum fq, impa- 
tiens ab; Eucer.: Tetralonia dilecta 9. 

Lepidoptera (3, n)—Nymphal.: Anosia; Papilion.: Iphiclides; 
Sphing.: Deilephila. 


Strophostyles helvola (3:199).—Blooms July 7-—October 19; 
8 visitors observed, July 31—August 26; Ma, R. 

Long-tongued Bees (8)—Bomb.: Bombus americanorum 9%; 
Megachil.: Megachile brevis ¢ 9, se, fq, generosa ¢ 9, se, ab, mendica 
3 2, petulans Q, se, fq, strophostylis 9, se, fq, oligolege, type, Oligo- 
tropus ¢, Xanthosarus 9. 

Ezxtra-floral nectaries—The following 45 species were taken on 
the extra-floral nectaries, July 31-September 8: 

Ants (3, $)—Formic.: Formica fusea ab, schaufussi, Lasius. 

Short-tongued Bees (2, 2)—Halict.: Oxystoglossa confusa; 
Sphecodini: Sphecodes arvensis. 

Other Hymenoptera (23) —Sphec.: Chalybion, Sceliphron; 
Philanth.: Cerceris clypeata, finitima, kennicottii fq, Philanthus 
punctatus; Vesp.: Polistes variatus, Vespula germanica; Eumen.: 
Leionotus vagus; Ozybel.: Oxybelus 4-notatus; Trypozyl.: Try- 
poxylon frigidum; Larr.: Astatus unicolor, Tachysphex mundus; 
Nysson.: Zanysson aurinotus; Pompil.: Ageniella longula, Lopho- 
pompilus atrox; Mutill. (4): Mutilla serupea, Sphaerophthalma ; 
Chrysid.: Hedychrum parvum, Tetrachrysis venusta; Bracon.: 
Agathis vulgaris; Ichnewmon.: Diplazon, Limneria fura. 


136 FLOWERS AND INSECTS—XXVI 


Diptera (15)—Syrph.: Mesogramma marginata; Tachin.; 
Euphorocera claripennis, Paradidyma singularis type; Sarcophag.: 
Helicobia helicis, 4-setosa, Metoposarecophaga, Sarcophaga assidua, 
hunteri, marginata; Musc.: Pseudopyrellia; Anthomy.: Coenosia 
antica; Agromyz.: Lobioptera; Drosophil.: Drosophila; Ortal.: 
Camptoneura, Rivellia 4-fasciata; Seps.: Sepsis. 

Coleoptera (1)—Coccinell.: Coccinella 9-notata. 

Hemiptera (1)—Caps.: Lygus. 


Strophostyles pauciflora—Blooms July 11—October 15; 3 vis- 
itors observed, August 14, September 7, October 3; Ma, R. 

Long-tongued Bees (2)—Bomb.: Bombus americanorum §; 
Megachil.: Megachile brevis 9. 

Short-tongued Bees (1)—Panurg.: Calliopsis andreniformis 9. 

Extra-floral nectaries—Three visitors observed, July 29, Sep- 
tember 7. 

Ants (1)—Formic.: Formica schaufussi §, 7. 

Short-tongued Bees (2)—Halict.: Chloralictus sparsus 3, 2, 
versatus ¢ 9, 6. 


Stylosanthes biflora (16: 163-5).—Blooms June 8—September 
9; 3 visitors observed, July 2-11; Ma, Y. 

Long-tongued Bees (1)—Bomb.: Bombus americanorum 9%. 

Short-tongued Bees (1)—Panurg.: Calliopsis andreniformis 
?, fq. 

Lepidoptera (1)—Papilion.: Eurema n. 


Tephrosia virginiana (3: 82).—Blooms June 10-July 2; 5 vis- 
itors observed, June 15-29; Ma, W. 

Long-tongued Bees (5)—Megachil.: Chelostomoides 9, se, Mega- 
chile addenda ¢ @, se, ab, brevis 2, se, mendica 9, petulans ¢ 9. 


Trifolium hybridum (int).—Blooms May 14-June 25; 16 vis- 
itors observed, June 6-18; Mas, W. 

Long-tongued Bees (6)—Ap.: Apis se, fq; Megachil. (9, sc): 
Alcidamea simplex fq, Diceratosmia, Osmia cordata; Nomad.: Holo- 
nomada affabilis 9; Epeol.: Epeolus interruptus 9. 


Short-tongued Bees (5)—RHalict. (2): Chloralictus versatus se, 
Odontalictus, Oxystoglossa similis se, Seladonia sc; Panurg.: Cal- 


liopsis andreniformis ¢ 9. 

Other Hymenoptera (1)—Sphec.: Priononyx atrata. 

Diptera (1)—Conop.: Zodion fulvifrons n. 

Lepidoptera (3, n)—Nymphal.: Charidryas; Lycaen.: Chryso- 
phanus; Hesperi.: Ancyloxypha. 


CHARLES ROBERTSON 137 


Trifolium pratense (int, 5: 177-8).—Blooms April 26-Novem- 
ber 1; 42 visitors observed, May 24—September 11; Mas, R. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (18)—Bomb.: Bombias auricomus ¢ 9, 
seutellaris 9, separatus ¢ 9 9, sc, ab, Bombus americanorum ¢ 9 9, 
se, ab, consimilis 9, se, impatiens 2, ridingsii ¢, Psithyrus laborio- 
sus 9, variabilis 9, fq; Stelid.: Anthidium psoraleae ¢ 9, se, fq; 
Megachil. (2): Osmiini: Alcidamea simplex, Osmia cordata se; 
Megachilini: Megachile brevis se ; Hucer.: Melissodes bimaculata ¢, 
Tetralonia dilecta ¢ 9, se, fq; Anthophor.: Amegilla 9, Anthemoessa 
o 2, Anthophora 9, sc. 

Short-tongued Bees (2, 9, n)—Halict.: Halictus lerouxii f; 
Panurg.: Calliopsis andreniformis c. 

Diptera (1)—Bombyli.: Exoprosopa fasciata. 

Lepidoptera (20, n)—Nymphal.: Anosia, Argynnis, Vanessa 
atalanta, cardui, huntera fq; Lycaen.: Everes; Papilion.: Callidryas, 
Eurymus, Heraclides, Iphiclides, Laertias, Papilio, Pieris, Pontia, 
Xanthidia; Hesperi.: Epargyreus ab, Limochores taumas, Polites, 
Thorybes pylades; Sphing.: Hemaris axillaris. 


Trifolium reflexum.—Blooms May 22—June 22; 2 visitors ob- 
served, June 13; Mas, W. 

Long-tongued Bees (1)—Megachil.: Osmia atriventris 9. 

Lepidoptera (1)—Lycaen.; Cyaniris n. 


__— Trifolium repens (int).—Blooms April 23—October 11; 80 vis- 
itors observed, May 12-July 14; Mas, W. 

Long-tongued Bees (33)—Ap.: Apis ab; Bomb.: Bombias sepa- 
ratus 9, se, Bombus americanorum @ 9%, sc, impatiens 9 9, ridingsii 
8, se, Psithyrus variabilis 9; Ceratin.: Ceratina 9, se; Stelid.: 
Anthidium psoraleae ¢ 9, se, fq; Megachil.: Trypetini: Neotrypetes 
barbatus ¢; Osmiini: Alcidamea simplex ¢ 9, se, ab, Diceratosmia 
©, se, ab, Hoplitis 2, se, fq, Osmia atriventris 9, se, fq, collinsiae 9, 
se, cordata 9, distincta 9, sc, pumila 9, se, ab; Megachilini: Anthe- 
mois 9, Megachile brevis ¢ 9, se, fq, generosa ¢, mendica 4; 
Coelioxyini: Coelioxys 8-dentata ¢ 9, fq, sayi ¢, fq; Nomad.: Cen- 
trias americanus 9, Holonomada affabilis ¢ 9, fq, superba 9, fq; 
Epeol.: Epeolus bifasciatus 4, interruptus ¢ 92, Triepeolus remiga- 
tus J; Eucer.: Tetralonia dilecta ¢, rosae 9; Anthophor.: Anthe- 
moessa ¢, Anthophora Q, se. 

Short-tongued Bees (15)—Halict.: Agapostemon radiatus 9, se, 
fq, viridulus 9, se, Augochlora fervida 9, viridula 9, Chloralictus 
pilosus 9, se, versatus 9, sc, Curtisapis coriacea 9, sc, fq, Halictus 


138 FLOWERS AND INSECTS—XXVI 


lerouxii ¢ 9, se, fq, parallelus 2, sc, Odontalictus 9, sc, Oxystoglossa 
confusa ¢ 2, fq, similis 2, Seladonia ¢ 9, se, fq; Andren.: Opan- 
drena cressonii 9, se; Panurg.: Calliopsis andreniformis J 9, se, fq. 

Other Hymenoptera (6)—Sphec.: Priononyx atrata, Sphex 
nigricans, pictipennis, jprocera; Bembic.: Microbembex; Scolt.: 
Campsomeris. 

Diptera (9)—Empid.: Parempis; Bombyli.: Bombylius atriceps, 
Systoechus, Thlipsogaster; Conop.: Physocephala texana, tibialis, 
Stylogaster biannulata, Zodion fulvifrons; Tachin.: Archytas analis. 

Lepidoptera (17, n)—Nymphal.: Charidryas, Euptoieta, 
Vanessa huntera; Lycaen.: Cyaniris, Everes; Papilion.: Eurymus, 
Iphiclides, Pieris, Pontia; Hesperi.: Ancyloxypha, Epargyreus, 
Limochores taumas fq, Pholisora catullus, Polites, Thanaos juve- 
nalis, Thorybes pylades; Noctu.: Plusia simplex. 


LILIACEAE 
Asparagus officinalis (int).—7 visitors observed, May 11- 
August 5; Ma, Y. 
Long-tongued Bees (2)—Ap.: Apis; Megachil.: Anthemois 
3 , se, ab. 
Short-tongued Bees (3, 9)—Halict.: Chloralictus versatus se, 
zephyrus se, Oxystoglossa similis e¢. 


Camassia esculenta (9: 266-7).—Blooms April 22—May 28; 48 
visitors observed, April 29—May 24; Mi (Ma), R. 

Long-tongued Bees (15)—Ap.: Apis ab; Bomb. (2): Bombias 
auricomus, separatus, Bombus americanorum, impatiens; Ceratin.: 
Ceratina ¢, Zaodontomerus 3’; Megachil.: Osmiini: Ceratosmia Q, 
Osmia pumila § 9; Megachilini: Megachile mendica ¢ 9; Nomad.: 
Centrias americanus 4, Holonomada affabilis 2, superba ¢ 9, fq; 
Eucer.: Tetralonia belfragei, 3, dilecta ¢ 9, faq. 

Short-tongued Bees (11, 2)—Halict.: Agapostemon viridulus, 
Chloralictus pilosus se, ab, pruinosus se, fq, versatus se, fq, Curtis- 
apis forbesii, Evylaeus pectoralis fq, Halictus lerouxii sc, Odonta- 
lictus se, Oxystoglossa confusa, similis, Seladonia se, ab. 

Other Hymenoptera (4)—Vesp.: Polistes variatus; EHumen.: 
Ancistrocerus tigris, Leionotus clypeatus; Pompil.: Anoplius illi- 
noensis. 

Diptera (12)—Syrph.: Eristalis dimidiatus, Orthoneura nitida, 
pictipennis, Paragus bicolor, Syritta; Tachin.: Linnaemyia; 
Sarcophag.: Cynomyia, Helicobia helicis; Musc.: Lucilia sericata, 
Phormia regina; Anthomy.: Phorbia acra, platura. 


CHARLES ROBERTSON 139 


Lepidoptera (5)—Nymphal.: Charidryas, Vanessa atalanta, 
huntera; Papilion.: Eurymus fq; Hesperi.: Pholisora catullus. 
Coleoptera (1)—Coccinell.: Hippodamea 15-maculata. 


Erythronium albidum (5: 69-71).—Blooms March 17—May 2; 
28 visitors observed, March 24—April 22; Mi, W. 

Long-tongued Bees (11)—Ap.: Apis se, ab; Bomb.: Bombus 
impatiens 9; Ceratin.: Ceratina ¢'; Megachil.: Centrosmia ¢, Cera- 
tosmia <', fq, Osmia collinsiae ¢ pumila ¢ 9, ab; Nomad. (4): 
Xanthidium dentariae, luteoloides, luteolum; ZLucer.: Tetralonia 
belfragei 3, fq. 

Short-tongued Bees (9)—Halict. (2) : Chloralictus pilosus, ver- 
satus sc, type, Halictus lerouxii, Seladonia; Collet.: Colletes in- 
aequalis ¢, ab; Andren.: Andrena carlini ¢ 9, se, ab, erythronii 
ob 2, se, ab, type, sayi J 2, se, Trachandrena mariae 9. 

Diptera (4)—Syrph.: Brachypalpus frontosus f, n, Eristalis 
dimidiatus; Bombyli.: Bombylius major; Musc.: Pseudopyrellia 
fq, n. 

Lepidoptera (3)—Papilion.: Eurymus, Pieris; Hesperi.: 
Thanaos juvenalis. 

Hemiptera (1)—Caps.: Lygus n. 


Lilium superbum.—Blooms June 15—July 17; 3 visitors ob- 
served, July 2; Ma, R. 

Lepidoptera.—Nymphal.: Anosia, Argynnis; Papilion.: Eu- 
phoeades. 


Melanthium virginicum (9: 273-4).—Blooms June 12—July 11; 
30 visitors observed, June 27—July 5; Mi, W. 

Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, n. 

Other Hymenoptera (3)—Sphec.: Ammobia ichneumonea; 
Chalcid.: Perilampus triangularis n; Tenthredin.: Hylotoma 
humeralis. 

Diptera (19)—Stratiomy.: Stratiomyia meigenii; Syrph. (n): 
Mesogramma marginata, Sphaerophoria, Syritta; Empid.: Parempis 
n; Tachin.: Archytas aterrima, Cistogaster occidua, pallasii, Eu- 
phorocera claripennis, Linnaemyia, Paradidyma n, Trichopoda pen- 
nipes; Sarcophag.: Sarcophaga cimbicis; Musc.: Lucilia caesar, 
Musca, Pseudopyrellia; Anthomy.: Anthomyiella n, Calythea n; 
Oscin.: Chlorops mellea n. 

Lepidoptera (1)—Lycaen.: Cyaniris n. 

Coleoptera (6)—Chrysomel.: Diabrotica atripennis n; Curcu- 
lion.: Centrinites fq, n; Lampyr.: Photinus; Mordell.: Mordella 
marginata n, melaena fq, n; Scarabae.: Trichius piger, fq. 


140 FLOWERS AND INSECTS—XXVI 


Nothoscordum bivalve (9: 266).—Blooms April 9—May 18; 19 
visitors observed, April 20—May 9; Mi, W. 

Long-tongued Bees (9)—Megachil.: Osmia atriventris d'; 
Nomad.: Centrias americanus 4, Gnathias cuneatus 9, ovatus ¢ 9, 
fq, Holonomada superba <', fg, Nomada cressonii 3 2, ab, type, 
parva J, fq, sayi 9, fq, Xanthidium luteoloides ¢. 

Short-tongued Bees (3, 9)—Halict.: Chloralictus versatus se, fq, 
Oxystoglossa similis ab; Andren.: Andrena nothoscordi, se, type, 
oligolege. 

Diptera (3)—Syrph.: Mesogramma marginata, Sphaerophoria 
fq; Bombyli.: Bombylius pulchellus. 

Lepidoptera (4)—Lycaen.: Everes; Papilion.: Eurymus, Pieris; 
Noctu.: Plusia simplex. 


Polygonatum commutatum (9: 268-9).—Blooms May 11—June 
23; 7 species and 23 individuals observed, May 23-June 9; Ma, W. 

Birds (1:4)—Trochil.: Trochilus 4. 

Long-tongued Bees (5: 18)—Bomb.: Bombus americanorum 9, 5, 
consimilis , se, 4; Ceratin.: Ceratina 9, sc, 2; Anthophor.: Anthe- 
moessa ~ 9, se, 4, Anthophora 9, se, 3. 

Short-tongued Bees (1:1)—AHalict.: Oxystoglossa confusa 
Qc; n. 


Smilacina racemosa (9:270).—Blooms May 7-30; 21 species 
and 44 individuals observed, May 8-23; Mi, W. 

Long-tongued Bees (1: 1)—Ap.: Apis e¢, 1. 

Short-tongued Bees (7: 13)—Halic. (9): Chloralictus obseurus 
c, 2, sparsus ¢, 2, versatus ¢, 1, zephyrus 1, Evylaeus pectoralis ¢, 
4, 4-maculatus ¢, 2, Oxystoglossa pura se, 1. 

Diptera (8: 19)—Culic.: Culex nigripes 1; Syrph.: Chilosia 
eyanescens f, 1, Criorhina decora 1, Volucella vesiculosa 5; Empid.: 
Empis humilis 3, levicula 1; Tachin.: Siphona 4; Musc.: Lucilia 
caesar 3. 

Coleoptera (5: 11)—Anthic.: Corphyra terminalis 1; Bruch.: 
Bruchus mimus 5; Mordell.: Mordellistena biplagiata 3; Scarabae.: 
Trichius affinis 1, Valgus 1. 


Smilacina stellata (9:269-70).—Blooms April 25—May 12; 16 
species and 28 individuals observed, April 30; Mi, W. 

Long-tongued Bees (2: 2, ¢)—Ceratin.: Zaodontomerus 1; 
Nomad.: Nomada cressonii 1. 

Short-tongued Bees (12: 20, 2).—Halic.: Augochlora viridula se, 
1, Chloralictus obscurus se, 1, smilacinae se, 1, type, sparsus se, 1, 
Evylaeus 4-maculatus se, 5, Halictus lerouxii se, 1, Oxystoglossa. 


CHARLES ROBERTSON 141 


confusa sc, 4, pura se, 1, similis se, 1; Sphecodini: Sphecodium 
smilacinae 1, type; Andren.: Andrena carlini 1, Opandrena cres- 
sonii se, 2. 

Diptera (2: 6)—Empid.: Empis humilis 5; Bombyli.: Bom- 
bylius major 1. 


Smilax herbacea.—Blooms May 24—July 6; 9 species and 19 
individuals observed, May 30, June 4, 6, 8; Mi, Y. 

On staminate flowers :— 

Long-tongued Bees (1: 1)—Ap.: Apis ¢, 1. 

Short-tongued Bees (3: 11, 2, se)—Halict.: Chloralictus ver- 
satus 3, Oxystoglossa confusa 1, similis 7. 

Diptera (2: 4)—Sarcophag.: Sarcophaga cimbicis 3; Muse.: 
Lucilia caesar 1. 

Lepidoptera (1: 1)—Nymphal.: Neonympha 1. 

Coleoptera (2: 2, f, n)—Cerambyc.: Euderces 1; Scarabae.: 
Euphoria fulgida 1. 


Smilax hispida—Blooms May 3—June 3; 16 visitors observed, 
May 17—June 3; Mi, Y. 

Long-tongued Bees (5)—Ap.: Apis sc; Bomb.: Bémbus impa- 
tiens 9; Ceratin.: Ceratina 9, sc; Megachil.: Osmia pumila 9, se; 
Nomad.: Nomada parva ¢. 

Short-tongued Bees (6, 2)—Halict.: Agapostemon radiatus ¢, 
Chloralictus tegularis sc, zephyrus ¢, Evylaeus pectoralis ¢, Oxysto- 
glossa confusa sc; Andren.: Opandrena cressonii se. 

Diptera (5)—Syrph. (f): Allograpta, Mesogramma geminata, 
Syrphus americanus; Empid.: Empis loripedis; Conop.: Conops 
brachyrrhynchus. 


Stenanthium angustifolium.—Blooms June 24—July 24; 4 vis- 
itors observed, July 14, 16; Mi, W. 

Short-tongued Bees (2)—Halict.: Chloralictus sparsus 2; Pro- 
sopid.: Prosopis ziziae ¢. 

Diptera (2)—Syrph.: Syritta; Tachin.: Ocyptera lata. 


Trillium sessile (9:271-3).—Blooms April 24-May 15; 1 vis- 
itor observed, April 29, Mi, R. 
Coleoptera(1)—Curculion.: Centrinites f, 10. 


Uvularia grandiflora (9: 270-1).—Blooms April 12—May 11; 8 
species and 19 individuals observed, April 17-29; Ma, Y. 

Long-tongued Bees (5:9, 9)—Bomb.: Bombias separatus 1, 
Bombus americanorum 2, impatiens 1, ridingsii 4; Megachil.: Osmia 
atriventris 1. 


142 FLOWERS AND INSECTS—XXVI 


Short-tongued Bees (3: 10)—Andren.: Andrena carlini ¢ 9, se, 
7, mandibularis 9, se, 2, pruni J, 1. 


LOBELIACEAE 

Lobelia cardinalis (4: 68-9).—Blooms August 3-September 15; 
6 visitors observed, August 18-September 2; Ma (O), R. 

Birds (1)—Trochil.: Trochilus ab. . 

Long-tongued Bees (1)—Bomb.: Bombus americanorum 9, fq, 
s, through slits, n. 

Short-tongued Bees (9, ce, n)—Halict.: Chloralictus versatus, 
Oxystoglossa confusa. 

Lepidoptera (2)—Papilion.: Euphoeades, Laertias. 


Lobelia cardinalis x siphilitica (4: 69).—Two visitors observed, 
August 21. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (1)—Bomb.: Bombus americanorum 9. 


Lobelia inflata——Blooms July 7—-November 19; 2 visitors ob- 
served, August 15; Mi, W. 

Short-tongued Bees (2, 2?)—Halict.: Chloralictus sparsus, Oxy- 
stoglossa confusa. 


Lobelia leptostachys (4:67-8).—Blooms June 30—August 17; 
22 visitors observed, July 3-31; Mas, W. 

Long-tongued Bees (14)—Ap.: Apis; Bomb. (9%): Bombias 
separatus, Bombus americanorum; Ceratin.: Ceratina 92; Stelid.: 
Anthidium psoraleae ¢' 2; Megachil.: Osmiini: Hoplitis 2; Mega- 
chilini: Chelostomoides <', Megachile brevis ¢ 9, sc, petulans 4’, fq, 
Oligotropus <'; Coelioxyini: Coelioxys 8-dentata , rufitarsis 9; 
Eucer.: Epimelissodes obliqua ¢, Melissodes bimaculata . 

Short-tongued Bees (4)—Halict.: Agapostemon viridulus 9, 
Chloralictus pilosus 9, ¢, n, Oxystoglossa confusa ¢ 9, Seladonia ¢. 

Diptera (1)—Bombyli.: Systoechus. 

Lepidoptera (3)—JZycaen.: Everes; Hespert.: Limochores 
taumas, Thanaos juvenalis. 


Lobelia siphilitica (4: 68).—Blooms August 12—October 16; 10 
visitors observed, August 21—-September 17; Ma, R. 

Long-tongued Bees (5)—Bomb.: Bombias separatus ?, Bombus 
americanorum @ 9, se, ab, consimilis 9, sc, impatiens %, sec; 
Anthophor.: Amegilla 9. 

Short-tongued Bees (3, 9, n)—Halict.: Chloralictus versatus ¢, 
Curtisapis coriacea, at slits, Oxystoglossa confusa ce. 

Lepidoptera (2)—Nymphal.: Anosia; Papilion.: Laertias. 


CHARLES ROBERTSON 143 


Lobelia spicata (4: 67).—Blooms May 20-June 30; 11 visitors 
observed, May 31—June 12; Mas, W. 

Long-tongued Bees (4, 9)—Ceratin.: Ceratina; Megachil.: 
Alcidamea simplex, Megachile brevis; Eucer.: Tetralonia dilecta. 

Lepidoptera (7)—Lycaen.: Chrysophanus; Papilion.; Pieris, 
Pontia; Hesperi.: Ancyloxypha, Limochores taumas, Pholisora 
eatullus, Polites. 

LYTHRACEAE 

Ammannia coccinea.—Blooms June 25—October 6; 12 species 
and 21 individuals taken, July 31—August 30; Mi, R. 

Long-tongued Bees (1: 1)—Ceratin.: Ceratina 9, se, 1. 

Short-tongued Bees (5:12)—Halict. (2): Chloralictus pilosus 
se, 2, sparsus 1, versatus se, 7, Oxystoglossa similis se, 1; Panurg.: 
Calliopsis andreniformis 9, 1. 

Diptera (3)—Syrph.: Mesogramma marginata 1, Syritta 1; 
Tachin.: Spallanzania 1. 

Lepidoptera (3)—Lycaen.: Everes 1; Papilion.: Eurema 1, 
Pontia 1. 


Cuphea petiolata—Blooms July 15-October 26; 3 visitors ob- 
served, July 29-September 4; Ma, R. 

Long-tongued Bees (2)—Bomb.: Bombus americanorum ¢ 9, 
ab; Eucer.: Melissodes bimaculata ¢ 9, fq. 

Short-tongued Bees (1)—Halict.: Oxystoglossa similis 9, se, n. 


Lythrum alatum (5:179).—Blooms May 27—September 5; 55 
visitors observed, June 18—August 28; Mas, R. 

Long-tongued Bees (24)—Ap.: Apis fq; Bomb.: Bombias sep- 
aratus 2 %, Bombus impatiens %, sc, fq; Ceratin.: Ceratina 9; 
Megachil.: Osmiini: Alcidamea simplex 9; Megachilini: Megachile 
brevis ¢ 9, se, ab, mendica ¢ 9, petulans ¢, Oligotropus ¢, Sayapis 
sayi ¢'; Coelioxyini: Coelioxys modesta ?, 8-dentata ¢ 2, fq; Epeol.: 
Epeolus bifasciatus ¢ 9, Triepeolus concavus 4, concolor ¢ 9; 
Eucer.: Epimelissodes atripes 2, obliqua 4, Florilegus ¢ 9, Melis- 
sodes bimaculata 4, coloradensis 4, comptoides ¢ 2, se, fq, type, 
petalostemonis 9, se, variabilis ¢, Tetralonia dilecta ¢ 9. 

Short-tongued Bees (7)—Halict.: Agapostemon radiatus ¢ 9, 
fq, viridulus ¢ 9, Chloralictus versatus ?, sc, Odontalictus 9, se, 
Oxystoglossa confusa 4, Seladonia 4; Panurg.: Calliopsis andreni- 
formis 9, se. 

Other Hymenoptera (3)—Sphec.: Priononyx atrata, Sphex 
nigricans fq, procera. 


144 FLOWERS AND INSECTS—XXVI 


Diptera (9)—Syrph.: Eristalis latifrons, Helophilus latifrons f, 
n, Tropidia mamillata f, n; Bombyli.: Exoprosopa emarginata, 
fasciata fq, fascipennis, Geron rufipes, Systoechus; Tachin.: Archy- 
tas analis. 

Lepidoptera (12)—Nymphal.: Charidryas, Vanessa cardui; 
Lycaen.: Chrysophanus; Papilion.: Eurema, Eurymus fq, Pieris, 
Pontia fq; Hespert.: Ancyloxypha, Hesperia, Limochores taumas, 
Pholisora catullus fq, Polites fq. 


MALVACEAE 


Abutilon theophrasti (int, 6: 269-70).—Blooms June 26—Octo- 
ber 14; 23 visitors observed, August 15-September 19; Ma, Y. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (15)—Ap.: Apis; Bomb.: Bombias separatus 
9, se, fq, Bombus americanorum ¢ 9%, fq; Megachil.: Megachile 
brevis 2, Xanthosarus 9, se; Hucer.: Epimelissodes obliqua ¢, Melis- 
sodes agilis ¢', bimaculata 2, sc, fq, boltoniae 9, comptoides Q, se, 
nivea 9, se, petalostemonis 9, simillima , variabilis 9, se; Antho- 
phor.: Amegilla 9. 

Short-tongued Bees (3, 2)—Halict.: Chloralictus versatus, ¢, n, 
Curtisapis coriacea, Seladonia. 

Diptera (1)—Syrph.: Mesogramma marginata f, n. 

Lepidoptera (3)—Papilion.: Callidryas, Pieris; Hesperi.: Pho- 
lisora catullus. 


Hibiscus lasiocarpos (6: 270-1).—Blooms July 20-September 
16; 8 visitors observed, July 29-September 11; Ma, W. 

Birds (1)—Trochil.: Trochilus. Bt 

Long-tongued Bees (6)—Bomb.: Bombias separatus 9, Bombus 
americanorum ¢ 9 %, ab; Megachil.: Megachile brevis ¢; Eucer.: 
Melissodes bimaculata ¢ 9; Emphor.: Emphor ¢ 9, se, ab, Meli- 
toma ¢. 

Coleoptera (1)—Scarabae.: Euphoria sepulchralis f, n. 


Hibiscus militaris—Blooms August 9-31; 3 visitors observed, 
August 15; Ma, R. 

Long-tongued Bees (3)—Bomb.: Bombus americanorum 9; 
Emphor.: Emphor ¢ 9, se, ab, Melitoma 2. 


Hibiscus trionum (int, 6:271-2).—Blooms June 20—October 
15; 5 visitors observed, August 28-September 26; Ma, Y. 
Long-tongued Bees (3)—Bomb.: Bombias auricomus 9, 2, 
Bombus americanorum ¢ %, 3; Hucer.: Melissodes boltoniae 9, 1. 
Lepidoptera (2)—Papilion.: Eurymus 2, Pieris 1. 


CHARLES 20BERTSON 145 


_ Malva rotundifolia (int, 6:268-9).—Blooms April 29-Novem- 
ber 19; 41 visitors observed, May 14—October 9; Mi, W. 

Long-tongued Bees (11)—Ap.: Apis ab; Bomb.: Bombias auri- 
comus 9, Bombus consimilis %, impatiens $, sc; Ceratin.: Ceratina 
9, se, fq; Megachil.: Trypetini: Neotrypetes truncatus ¢; Osmiini: 
Alcidamea simplex 9, Osmia pumila 9; Nomad.: Centrias ameri- 
canus ¢ 9, fq, Holonomada affabilis 9; Lucer.: Melissodes bimacu- 
lata J. 

Short-tongued Bees (22)—Halict.: Agapostemon radiatus ¢ 9, 
fq, viridulus ¢ 9, se, fq, Augochlora fervida 9, Chloralictus illi- 
noensis 9, type, pilosus 9, sparsus ¢ 9, fq, versatus ¢ 9, se, fq, 
zephyrus ¢, Curtisapis coriacea 9, Evylaeus pectoralis ¢ 2, se, ab, 
truncatus 9, sc, Halictus lerouxii ?, sc, Odontalictus ¢ 2, Oxysto- 
glossa confusa ¢ 9, fq, pura 9, similis 9, fq, Seladonia 9, se, ab; 
Prosopid.: Prosopis pygmaea 9, sayi 4, ab, ziziae ¢ 9, sf, n; Collet.: 
Colletes eulophi 2; Panurg.: Calliopsis andreniformis ¢ 9, se, ab. 

Diptera (5)—Syrph.: Mesogramma marginata sf; Empid.: 
Empis distans; Conop.; Zodion fulvifrons; Musc.: Pseudopyrellia ; 
Anthomy.: Phorbia aera. 

Lepidoptera (2)—Papilion.: Pieris, Pontia. 

Coleoptera (1)—Malach.: Collops f, n. 

May 31, June 24, the first 100 individuals, representing 27 
species, are as follows: 

Long-tongued Bees (7: 25)—Ap.: Apis 11; Ceratin.: Ceratina 
4; Megachil.: Neotrypetes truncatus 3, Aleidamea simplex 1, Osmia 
pumila 1; Nomad.: Centrias americanus 4, Holonomada affabilis 1. 

Short-tongued Bees (17: 72)—Halict.: Agapostemon radiatus 2, 
viridulus 3, Augochlora fervida 1, Chloralictus sparsus 2, Curti- 
sapis coriacea 1, Evylaeus pectoralis 23, Halictus lerouxii 1, Odon- 
talictus 1, Oxystoglossa confusa 2, pura 1, similis 5, Seladonia 9; 
Prosopid.: Prosopis pygmaea 2, sayi 10, ziziae 1; Collet.: Colletes 
eulophi 1; Panurg.: Calliopsis andreniformis 7. 

Diptera (2:2)—Empid.: Empis distans 1; Conop.: Zodion ful- 
vifrons 1. 

Lepidoptera (1: 1)—Papilion.; Pontia 1. 


Sida spinosa (int, 6: 269).—Blooms June 14—October 26; 8 vis- 
itors observed, August 24-September 18; Mi, Y. 

Long-tongued Bees (2)—Bomb.: Bombus americanorum ¢ 9, 
fq; Ceratin.: Ceratina 9, se. 

Short-tongued Bees (1)—AHalict.: Oxystoglossa confusa ¢. 

Lepidoptera (5)—Papilion.: Eurema, Eurymus, Pieris fq, Pon- 
tia; Hesperi.: Hesperia. 


146 FLOWERS AND iNSECTS—XXVI 


NYMPHAEACEAE ; 

Castalia tuberosa (2: 123-5).—Blooms May 22-September 18; 
12 visitors observed, May 22-September 17; Mi, W. 

Short-tongued Bees (8)—Halict. (2, c) : Agapostemon radiatus 
ab, 1 dead, viridulus ab, Chloralictus nymphaearum, Curtisapis 
coriacea dead, Evylaeus nelumbonis ab, Halictus lerouxii dead, 
parallelus 1 dead; Prosopid.: Prosopis nelumbonis Q, f. 

Diptera (3)—Syrph.: Helophilus divisus f, ab, latifrons f; 
Bombylt.: Sparnopolius, dead, n. 

Coleoptera (1)—Rhipiphor.: Rhipiphorus limbatus, dead. 


_ Nelumbo lutea (2:297-8).—Blooms June 23—August 31; 32 
visitors observed, July 26—August 12; Mi, W. 

Long-tongued Bees (6)—Ap.: Apis ec, ab; Bomb. (n) : Bombias 
scutellaris %, expl, separatus 9, expl, Bombus americanorum 9, 
expl, impatiens 9, dead; Ceratin.: Ceratina 9, e. 

Short-tongued Bees (12)—Halict.: Agapostemon radiatus 9, ¢, 
ab, Chloralictus nymphaearum @, ¢, type, pilosus 9, ¢, ab, sparsus 
2, ec, versatus ¢ 9, f, e, ab, Evylaeus nelumbonis 9, ¢, ab, type, 
Halictus lerouxii 9, ¢, parallelus 9, ce, ab, Odontalictus 9, ce, Oxy- 
stoglossa confusa 9, e, ab; Prosopid. (9, £): Prosopis nelumbonis, 
type, ziziae. 

Other Hymenoptera (2, expl, n)—Scoli.: Elis interrupta, Sco- 
lia bicineta. 

Diptera (8)—Syrph. (£): Mesogramma marginata, Orthoneura 
nitida, Pipiza pulehella ab, Sphaerophoria, Syritta, Syrphus 
ribesii; Musc.: Pseudopyrellia, dead, n; Zphydr.: Notiphila f, fq. 

Coleoptera (4, £)—Cerambyc.: Typocerus badius; Chrysomel.: 
Diabrotica 12-punctata ab; Coccinell.: Hippodamea 13-punctata, 
Megilla. 


Nymphaea advena (2: 122-3).—Blooms May 19—August 20; 2 
visitors observed, August 20; Mi, Y. 

Short-tongued Bees (1)—Halict.: Evylaeus nelumbonis 9, e¢. 

Diptera (1)—Syrph.: Helophilus divisus. 


OLEACEAE 


Fraxinus americanus (anemophilous).—One visitor observed, 
April 19. 
Long-tongued Bees (1)—Ap.: Apis ¢, ab. 


ONAGRACEAE 


—— Circaea lutetiana (5:273).—Blooms June 20-July 26; 18 
species and 94 individuals, June 25-July 10; Mi, W. 


CHARLES ROBERTSON 147 


Long-tongued Bees (2:6)—Bomb.: Bombus americanorum 9, 
1; Ceratin.: Ceratina 9, se, 5. 

Short-tongued Bees (9:86)—Halict.: Augochlora viridula 9, 
se, 1, Chloralictus obscurus 9, se, 1, sparsus 9, 1, versatus 9, se, 30, 
Curtisapis fuscipennis ?, sc, 14, Evylaeus pectinatus 9, se, 1, pee- 
toralis ?, 1, 4-maculatus ¢ 9, se, 22, Oxystoglossa confusa 9, se, 15. 

Other Hymenoptera (1: 1)—Chalcid.: Smicra debilis. 

Diptera (6:11)—Syrph.: Allograpta 1, Mesogramma geminata 
5, marginata 1, Baccha fuscipennis 1; Bombyli. (f, n): Anthrax 
sinuosa 2, Argyramoeba oedipus 1. 


Gaura biennis (5: 273).—Blooms July 2—October 24; 7 visitors 
observed, August 23—September 10; Ma, W. 

Long-tongued Bees (5)—Ap.: Apis se; Bomb.: Bombus ameri- 
eanorum ¥, sc, ab, impatiens §%, ¢; Megachil.: Megachile mendica 
9, ¢; Eucer.: Melissodes bimaculata 9, se. 

Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, ¢, n. 

Diptera (1)—Syrph.: Syrphus americanus f, n. 


Ludvigia alternifolia (5: 271).—Blooms July 11—August 23; 17 
species and 40 individuals taken on August 3, 8; Mi, Y. 

Long-tongued Bees (3:4)—Bomb.: Bombus americanorum 4, 
1; Megachil.: Megachile brevis 9, 1, petulans 4, 2. 

Short-tongued Bees (10: 32)—Halict. (2): Chloralictus pilosus 
se, 6, pruinosus 2, sparsus ¢, 1, versatus sc, 13, Halictus parallelus 
se, 1, Odontalictus se, 4, Oxystoglossa confusa 1, pura 1, similis se, 
1, Seladonia 2. 

Other Hymenoptera (2:2)—Philanth.: Philanthus ventilabris 
1; Crabron.: Anacrabro 1. 

Diptera (1:1)—Mycetophil.: Sciara atrata 1, n. 

Lepidoptera (1: 1)—Lycaen.: Everes 1. 


Ludvigia polycarpa (5:272).—Eighteen species and 59 indi- 
viduals, August 3-19; Mi (Pol), Y. 

Short-tongued Bees (5:40)—Halict.; Chloralictus cressonii 9, 
1, versatus 9, se, 36, zephyrus ?, 1, Evylaeus pectoralis ¢, 1, Oxy- 
stoglossa similis 9, 1. 

Other Hymenoptera (6:8)—Scoli.: Elis interrupta 1; Phi- 
lanth.: Cerceris compacta 1; Vesp.: Polistes pallipes 1, variatus 1; 
Pompil.: Lophopompilus atrox 2, philadelphicus 2. 

Diptera (7: 11)—Syrph.: Mesogramma marginata 4, polita 1; 
Tachin.: Archytas analis 1, Belvosia unifasciata 1, Spallanzania 1; 
Sarcophag.: Sarcophaga sinuata 2; Anthomy.: Limnophora 1. 


148 FLOWERS AND INSECTS—XXVI 


Oenothera biennis (5:272).—Blooms July 20-October 16; 10 
visitors observed, August 13—-September 2; Ma, Y. 

Birds (1)—Trochil.: Trochilus fq. 

Long-tongued Bees (6)—Ap.: Apis se, fg; Bomb.: Bombus 
americanorum ¢ Q, se, fq; Megachil.: Megachile mendica 9, ¢; 
Eucer.: Anthedon ¢ 9, se, ab, oligolege, Epimelissodes obliqua 9, 
c, Melissodes bimaculata 9, ec. 

Short-tongued Bees (2, 9, e)—Halict.: Agapostemon viridulus; 
Nomi.: Paranomia. 

Lepidoptera (1)—Sphing.: Deilephila. 


Oenothera fruticosa (5: 272-3).—Blooms May 24-June 29; 28 
visitors observed, May 28—June 25; Ma, Y. 

Long-tongued Bees (7)—Bomb.: Bombus americanorum Q, se, 
ab; Ceratin.: Ceratina ¢ 9, se, fq; Megachil.: Alcidamea simplex 
2, e, Cyphopyga J @, se, ab, Megachile brevis ¢ 2, Sayapis polli- 
caris 9; Hucer.: Tetralonia dilecta 9, se. 

Short-tongued Bees (9, ?, e¢, n)—Halict.: Agapostemon viridu- 
lus ab, Chloralictus albipennis, versatus, Evylaeus pectoralis, 
Halictus lerouxii, parallelus, Odontalictus, Oxystoglossa confusa 
fq, Seladonia. 

Diptera (6, f, n)—Syrph.: Eristalis dimidiatus, latifrons, 
Sphaerophoria, Syrphus americanus, Tropidia mamillata; Tachin.: 
Cistogaster pallasii. 

Lepidoptera (4)—Papilion.: Laertias, Pontia; Hesperi.: Limo- 
chores taumas, Polites fq. 

Coleoptera (2, f, n)—Chrysomel.:~ Diabrotica 12-punctata; 
Curculion.: Centrinus seutellum-album ab. 


ORCHIDACEAE 
Cypripedium parviflorum pubescens.—Blooms May 7-30; 2 
visitors observed, May 15, 17; Ma, Y. 
Long-tongued Bees (2, n)—Ceratin.: Ceratina 9, 1, Zaodon- 
tomerus , 1. 


Habenaria leucophaea (6: 53-4).—Blooms June 12-July 12; 1 
visitor observed, July 2; Ma (S), W. 
Lepidoptera (1)—Sphing.: Chaerocampa 1. 


Liparis liliifolia—Blooms May 17-June 20; 2 visitors observed, 
June 3; Mi, R. 

Diptera (1)—Anthomy.: Hylemyia juvenalis n. 

Hemiptera (1)—Caps.: Lopidea n. 


CHARLES ROBERTSON 149 


Orchis spectabilis (6:52-3).—Blooms May 6-19; 2 visitors 
observed, May 13; Ma, R. 

Long-tongued Bees (2)—Bomb.: Bombias separatus 9, Bombus 
americanorum 9. 


Spiranthes gracilis (6:51-2).—Blooms August 27—October 7; 
2 visitors observed, September 3, 4; Ma, W. 

Long-tongued Bees (1)—Bomb.: Bombus americanorum ¢. 

Short-tongued Bees (1)—Panurg.; Calliopsis andreniformis 9. 


OROBANCHACEAE 
Orobanche uniflora.—Blooms April 27—May 28; 1 visitor ob- 
served, May 16; Ma, W. 
Long-tongued Bees (1)—Bomb.: Bombus americanorum 9. 


OXALIDACEAE 

Oxalis corniculata.—Blooms April 14—July 7; 18 visitors ob- 
served, May 22—June 10; Mi, Y. 

Long-tongued Bees (4)—Ap.: Apis; Ceratin.: Ceratina ¢ 9; 
Megachil.; Alcidamea simplex ¢, Osmia pumila 9, se. 

Short-tongued Bees (9, 2, se)—Halict.: Chloralictus albipennis, 
pilosus fq, pruinosus fq, tegularis, versatus, Evylaeus foxii, pee- 
toralis, Odontalictus, Seladonia. 

Diptera (1)—Syrph.: Mesogramma marginata sf. 

Lepidoptera (4)—Nymphal.; Phyciodes fq; Papilion.: Pieris, 
Pontia; Hesperi.: Pholisora catullus. 


Oxalis stricta——Blooms June 1—November 7; 12 visitors ob- 
served, June 18, August 4, 22, October 9; Mi, Y. 

Long-tongued Bees (2)—Bomb.: Bombus americanorum 9%; 
Eucer.: Melissodes bimaculata 9. 

Short-tongued Bees (2, 2, se)—Halict.: Chloralictus versatus; 
Panurg.: Calliopsis andreniformis. 

Diptera (5)—Syrph. (f, n): Mesogramma marginata, Syritta; 
Empid.: Parempis; Bombyli.: Sparnopolius, Thlipsogaster. 

Lepidoptera (3)—Papilion.: Pieris; Hesperi.: Pholisora catul- 
lus, hayhurstii. 


Oxalis violacea (6: 272-3).—Blooms April 6—June 10; 31 vis- 
itors observed, April 23-May 17; Mi (Ma), R. 

Long-tongued Bees (12)—Ap.: Apis; Bomb.: Bombias auri- 
comus 9, Bombus americanorum 9; Ceratin.: Ceratina ¢ 9, fa, 
Zaodontomerus 4, fq; Megachil.: Monilosmia ¢, Osmia pumila 9, 
fq; Nomad.; Centrias americanus ¢, Holonomada superba ¢ 9, faq, 


150 FLOWERS AND INSECTS—XXVI 


Nomada cressonii 4, parva ¢ 9, fq, type; Eucer.: Tetralonia dilecta 
3 @, fq. 

Short-tongued Bees (14)—Halict. (¢): Agapostemon radiatus, 
viridulus, Chloralictus albipennis, pilosus, se, ab, versatus, Curti- 
sapis forbesii, Evylaeus pectoralis, Halictus lerouxii, se, ab, Odon- 
talictus se, Oxystoglossa confusa ab, Seladonia sc, ab; Andren.: 
Iomelissa 2, Opandrena cressonii 9, personata ¢ 9. 

Diptera (1)—Bombyli.: Bombylius pulchellus. 

Lepidoptera (3)—Nymphal.: Phyciodes; Papilion.: Eurymus; 
Hespert.: Thanaos brizo. 

Coleoptera (1)—Buprest.: Acmaeodera culta f, n. 


PAPAVERACEAE 

_“ Sanguinaria canadensis (5:175-6).—Blooms March 16—April 
30; 11 visitors observed, April 11-14; Mi, W. 

Long-tongued Bees (3)—Ap.: Apis e, ab; Ceratin.: Zaodon- 
tomerus ¢; Megachil.: Ceratosmia <. 

Short-tongued Bees (4)—Halict. (9): Chloralictus sparsus, 
zephyrus, Evylaeus foxii; Andren.: Andrena carlini ¢ 2, fq. 

Diptera (3)—Syrph.: Syrphus americanus f; Bombyli.: Bom- 
bylius major; Tachin.: Gonia capitata. 

Coleoptera (1)—Oedemer.: Asclera ruficollis f, fq. 


PASSIFLORACEAE 

Passiflora lutea—Blooms July 5-September 26; 6 visitors ob- 
served, July 8-September 9; Mi, W. 

Short-tongued Bees (4)—Aalict. (9, ¢, n): Chloralictus pru- 
inosus 1, versatus 2; Collet.: Colletes latitarsis J 9, ab; Panurg.: 
Anthemureus passiflorae ¢ 9, se, ab, type, oligolege. 

Other Hymenoptera (2)—Humen.: Eumenes fraternus 1; 
Crabron.: Anacrabro 1. 

PEDALIACEAE 

Martynia louisiana (5: 65).—Blooms July 12-September 14; 1 
visitor observed, September 3; Ma, R. 

Long-tongued Bees (1)—Bomb.: Bombus americanorum 9. 


PHRYMACEAE 
Phryma leptostachya (5:68).—Blooms July 3-September 3; 2 
visitors observed, July 27, August 8; Mi, R. 
Long-tongued Bees (1)—Ceratin.: Ceratina 9. 
Short-tongued Bees (1)—Halict.: Oxystoglossa confusa ¢. 


PHYTOLACCACEAE 
Phytolacca decandra (5: 68-9).—Blooms June 14—October 15; 
12 visitors observed, July 17, 23; Mis, W. 


CHARLES ROBERTSON 151 


Long-tongued Bees (1)—Ap.: Apis. 

Short-tongued Bees (5)—Halict.: Chloralictus sparsus ¢ 9, se, 
ab, versatus 9, se, ab, zephyrus 9, Odontalictus ¢, Seladonia ¢ 9. 

Other Hymenoptera (2)—Vesp.: Polistes pallipes; Pompil.: 
Priocnemoides fulvicornis. 

Diptera (4)—Syrph.: Mesogramma geminata, Syritta ab; 
Empid.; Parempis; Tachin.; Archytas analis. 


PLANTAGINACEAE (anemophilous) 

Plantago major.—Three visitors observed, June 23-—July 17. 

Long-tongued Bees (1)—Bomb.: Bombus americanorum 9, ¢, 1. 

Short-tongued Bees (2, 2 ¢)—Halict.: Chloralictus versatus 11, 
Oxystoglossa similis 1. 

POLEMONIACEAE 

Phlox divaricata (8: 143, 13: 578).—Blooms April 3-—June 2; 
25 visitors observed, April 25-May 23; Ma, R. 

Long-tongued Bees (8)—Bomb. (2): Bombias separatus, Bom- 
bus americanorum ab, consimilis, impatiens, ridingsii, Psithyrus 
variabilis; Megachil.: Osmia cordata ¢; Eucer.: Tetralonia dilecta 
J , ab. 

Diptera (1)—Bombyli.: Bombylius atriceps. 

Lepidoptera (16)—Nymphal.: Anosia; Papilion.: Euphoeades, 
Eurymus, Heraclides, Iphiclides, Jasoniades, Laertias, Papilio; 
Hesperi.: Atrytone zabulon ab, Epargyreus, Limochores taumas, 
Thanaos icelus, Thorybes bathyllus; Sphing.: Deilephila, Hemaris 
thysbe ; Noctu.: Plusia simplex. 

April 29, May 6, 11, 18, 20, 1909, the following 9 species and 62 
individuals were taken on the flowers: 

Long-tongued Bees (6: 56)—Bomb.: Bombias separatus 1, Bom- 
bus americanorum 7, consimilis 1, ridingsii 1, Psithyrus variabilis 
3; Eucer.: Tetralonia dilecta 43. 

Lepidoptera (3:6)—Papilion.: Eurymus 1, Iphiclides 1; 
Hesperi.: Atrytone zabulon 4. 


Phlox glaberrima (8: 142).—Blooms May 28—August 6; 8 vis- 
itors observed, May 28—July 18; Ma, R. 

Lepidoptera (7)—Nymphal.: Anosia; Papilion.: Eurymus, 
Heraclides, Laertias, Papilio; Hesperi.: Polites; Ctenuch.: Seepsis. 

Diptera (1)—Syrph.: Syrphus americanus f, n. 


Phlox pilosa (8: 142-3).—Blooms April 27—June 29; 20 vis- 
itors observed, May 8—June 8; Ma, R. 

Long-tongued Bees (7)—Bomb. (2): Bombias auricomus fq, 
separatus, Bombus americanorum, impatiens; Nomad.; Holonomada 


152 FLOWERS AND INSECTS—XXVI 


superba 9; Eucer.: Tetralonia dilecta J 9, ab; Anthophor.: An- 
thophora Q. 

Diptera (1)—Bombyli.: Bombylius atriceps. 

Lepidoptera (12)—Nymphal.: Phyciodes, Vanessa huntera; 
Lycaen.: Chrysophanus; Papilion.: Euphoeades, Eurymus ab, 
Jasoniades, Papilio; Hesperi.: Epargyreus, Polites fq, Thorybes 
bathyllus fq, pylades; Noctu.: Plusia simplex fq. 

May 16, 1911, 6 species and 48 individuals were taken on the 
flowers, as follows: 

Long-tongued Bees (2:21)—Bomb.: Bombias auricomus 1; 
Eucer.: Tetralonia dilecta 20. 

Lepidoptera (4:27)—Papilion.: Eurymus 10; Hespert.: Epar- 
gyreus 2, Polites 8, Thorybes bathyllus 7. 


Polemonium reptans (13:578-9).—Blooms April 12—May 24; 
50 visitors observed, April 14-May 20; Ma, R. 

Long-tongued Bees (21)—Ap.: Apis se, ab; Bomb. (2): Bom- 
bias auricomus, separatus fq, Bombus americanorum ab, consimilis, 
impatiens fq, ridingsii, Psithyrus variabilis; Ceratin.: Ceratina J 
2, ab, Zaodontomerus 4; Megachil.: Alcidamea simplex ,', Ceratos- 
mia ¢ 9, Diceratosmia 9, sec, fq, Osmia atriventris fi 9, pumila J 
2, se, ab; Nomad.: Gnathias ovatus 9, xanthoparius , fq, Holo- 
nomada affabilis ¥'; Eucer.: Tetralonia belfragei ¢ 9, se, ab, dilecta 
3b; fq; Anthophor.: Anthophora ~. : 

Short-tongued Bees (17)—Halict. (2) : Agapostemon radiatus, 
Chloralictus coreopsis se, obscurus, pilosus se, versatus, Curtisapis 
coriacea se, Halictus lerouxii se, Oxystoglossa confusa sc, ab, pura 
se, fq, similis; Andren.: Andrena carlini ?, geranii <, fq, nasonii 
2, ¢, pruni 9, sayi 2, sc, Ptilandrena g. maculati 4, polemonii J 9, 
se, ab, type, oligolege. 

Diptera (5)—Syrph.: Mesogramma marginata f, n, Pipiza 
femoralis f, n, Rhingia sf; Empid.: Pachymeria; Bombyli.: Bom- 
bylius major. 

Lepidoptera (5, n)—Papilion.: Eurymus fq; Hespert.: Thanaos 
brizo, juvenalis fq; Sphing.: Hemaris thysbe; Noctu.: Plusia sim- 
plex fq. 

Coleoptera (2, f, n)—Anthic.: Corphyra terminalis; Coccinell.: 
Megilla. 

April 14, 21, 28, 1910, the following 30 species and 133 individ- 
uals were taken on the flowers: 

Long-tongued Bees (15:90)—Ap.: Apis 26; Bomb.: Bombias 
auricomus 8, separatus 6, Bombus americanorum 5, impatiens 5, 
ridingsii 1, Psithyrus variabilis 1; Ceratin.: Ceratina 3, Zaodon- 


CHARLES ROBERTSON 153 


tomerus 1; Megachil.: Ceratosmia 1, Diceratosmia 7, Osmia atri- 
ventris 3, pumila 6; Lucer.: Tetralonia belfragei 17, dilecta 5. 

Short-tongued Bees (9:21)—JWHalict.: Agapostemon radiatus 1, 
Chloralictus coreopsis 1, pilosus 3, versatus 1, Curtisapis coriacea 
2, Oxystoglossa pura 6, similis 2; Andren.: Andrena pruni 1, Pti- 
landrena polemonii 4. 

Diptera (2:2)—Syrph.: Pipiza femoralis 1; Bombyli.: Bom- 
bylius major 1. 

Lepidoptera (4: 20)—Papilion.: Eurymus 5; Hesperi.: Thanaos 
juvenalis 6; Sphing.: Hemaris thysbe 1; Noctu.; Plusia simplex 8. 


POLYGALACEAE 

Polygala sanguinea.—Blooms June 8—-August 27; 4 visitors 
observed, August 26, 27; Mas, R. 

Long-tongued Bees (2, ¢)—Epeol.: Triepeolus cressonii; 
Eucer.: Melissodes nivea fq. 

Short-tongued Bees (1)—Panurg.: Calliopsis andreniformis ¢ 
9, se, fq. 

Diptera (1)—Bombyli.: Systoechus. 


POLYGONACEAE 


Polygonum acre.—Blooms June 24—October 26; 10 visitors 
observed, August 26—-September 16; Mis, W. 

Long-tongued Bees (1)—Ap.: Apis. 

Short-tongued Bees (1)—Halict.: Augochlora viridula 9. 

Other Hymenoptera (5)—Vesp.: Polistes pallipes; Humen.: 
Ancistrocerus capra, Eumenes fraternus; Crabron.: Xestocrabro 
6-maculatus; Nysson.: Pseudoplisus divisus. 

Diptera (3)—Syrph.: Platychirus quadratus, Syritta; Tachin.: 
Archytas aterrima fq. 


Polygonum amphibium.—Blooms August 2—October 30; 1 vis- 
itor observed, August 30; Mis, R. 
Other Hymenoptera—Vesp.: Vespula germanica. 


Polygonum hydropiper.—Blooms July 26—October 6; 3 visitors 
observed, September 16; Mis, W. 

Short-tongued Bees—Halict.; Halictus lerouxii 9. 

Other Hymenoptera—Vesp.: Polistes variatus. 

Diptera—Tachin.; Tachina mella. 


Polygonum hydropiperoides (9: 72-3).—Blooms July 11-Sep- 
tember 20; 73 visitors observed, August 30, September 20; Mis, W. 

Long-tongued Bees (4)—Ap.: Apis; Ceratin.: Ceratina Q; 
Megachil.: Megachile brevis ¢, mendica 9. 


154 FLOWERS AND INSECTS—XXVI 


Short-tongued Bees (10)—Halict.: Agapostemon radiatus ¢ 9, 
Curtisapis coriacea ¢, fq, Halictus lerouxii 9, Seladonia 9; 
Prosopid.: Prosopis pygmaea '; Collet.: Colletes americanus ¢ 9, 
fq, armatus 0, ab, eulophi J, latitarsis 9; Andren.: Pterandrena 
solidaginis 9. 

Other Hymenoptera (39)—Sphec.: Ammobia ichneumonea, 
Isodontia apicalis, Priononyx atrata, thomae, Sceliphron; Scoli.: 
Elis 5-cineta; Philanth.: Cerceris fumipennis, kennicottii, Eucer- 
ceris, Philanthus punctatus, ventilabris; Vesp.: Polistes pallipes, 
variatus; Humen.: Ancistrocerus capra, Leionotus arvensis, dor- 
salis; Crabron.: Anacrabro, Synothyreopus, Xestocrabro texanus, 
trifasciatus; Oxybel.: Notoglossa americana, Oxybelus 4-notatus; 
Larr.: Astatus unicolor, Larropsis fq, Tachytes aurulentus; 
Nysson.: Pseudoplisus phaleratus; Pompil.: Batizonus, Ceropales 
fraterna, Episyron, Lophopompilus philadelphicus, Poecilopompilus 
interruptus, Priocnemoides fulvicornis; Tiphi.: Tiphia clypeata; 
Mutil.: Sphaerophthalma; Chrysid.: Chrysis texana, Hedyechrum 
violaceum, wiltii, Holopyga, Tetrachrysis nitidula. 

Diptera (16)—Syrph.: Eristalis bastardi, flavipes, Paragus 
tibialis, Syritta, Tropidia quadrata fq; Bombyli.: Systoechus; 
Conop.: Conops brachyrrhynechus; Tachin.: Archytas analis, Chae- 
togaedia analis; Sarcophag.: Helicobia helicis, 4-setosa, Sareophaga 
hunteri; Musc.:; Compsomyia, Phormia regina, Pseudopyrellia; 
Anthomy.: Coenosia antica. 

Coleoptera (4)—Chrysomel.: Disonycha; Coccinell.: Coccinella 
9-notata; Curculion.: Listronotus; Lampyr.: Chauliognathus penn- 
sylvanicus. 


_ Polygonum lapathifolium.—Blooms June 22—September 19; 18 
Species and 28 individuals observed, August 22, 1910; Mis, W. 

Long-tongued Bees (1:1)—Bomb.: Psithyrus variabilis J, 1. 

Short-tongued Bees (3:3, 9)—Halict.: Augochlora fervida 1, 
Chloralictus pilosus 1, Halictus parallelus se, 1. 

Other Hymenoptera (9: 16)—Scolz.: Elis interrupta 1, 5-cincta 
5, Scolia bicincta 1; Philanth.: Eucerceris 3, Philanthus punctatus 2, 
ventilabris 1; Vesp.: Polistes variatus 1; Larr.: Astatus unicolor 1; 
Chrysid.: Hedychrum wiltii 1. 

Diptera (3:3)—Tachin.: Gymnosoma 1, Trichophora 1; 
Anthomy.: Phorbia platural. 

Lepidoptera (1:1)—Nymphal.: Phyciodes 1. 

Hemiptera (1: 4)—Zygae.: Lygaeus 4. 


Polygonum pennsylvanicum (9:72).—Blooms June 20—Octo- 
ber 26; 87 visitors observed, August 8-September 22; Mis, W. 


CHARLES ROBERTSON 155 


Long-tongued Bees (10)—Ap.: Apis se, ab; Bomb.: Bombias 
separatus ¢, Bombus americanorum ¢ 9, ab, impatiens ¢ 9, ab; 
Megachil.: Megachile brevis ¢ 9, petulans 4; Epeol.: Epeolus pusil- 
lus ¢, Triepeolus donatus ¢; HLucer.: Melissodes autumnalis ¢, 
bimaculata 9. 

Short-tongued Bees (11)— Halict.: Agapostemon radiatus , 
Augochlora viridula 9, Chloralictus pilosus 9, sparsus 9, versatus 
°, Halictus parallelus ¢ 9, Oxystoglossa confusa 9, Seladonia 9; 
Andren.: Pterandrena asteris 4, solidaginis 9; Panurg.: Calliopsis 
andreniformis ¢ 2, fq. 

Other Hymenoptera (29)—Sphec.: Chlorion, Priononyx atrata, 
Sphex nigricans; Bembic.: Bicyrtes ventralis; Scoli.; Elis 5-cincta 
fq, Seolia bicincta; Philanth.; Cerceris clypeata, fulvipes, Eucer- 
ceris; Vesp.: Polistes annularis, pallipes, rubiginosus, variatus, 
Vespula cuneata fq, germanica ab; Eumen.: Ancistrocerus campes- 
tris, capra fq, tigris fq; Crabron.: Solenius, Xestocrabro 6-macu- 
latus; Larr.: Larropsis, Tachytes aurulentus, elongatus; Pompil.: 
Anoplius illinoensis, Lophopompilus philadelphicus, Planiceps 
niger, Pompiloides americanus, Priocnemoides fulvicornis; [chneu- 
mon.: Ceratosoma. 

Diptera (28)—Syrph.: Eristalis aeneus, tenax, transversus, 
Mesogramma marginata, polita, Milesia, Sphaerophoria, Syritta, 
Syrphus americanus fq, torvus, Tropidia quadrata; Bombyli.: 
Sparnopolius; J'achin.: Archytas analis, aterrima ab, Belvosia uni- 
fasciata, Chaetogaedia analis, Cistogaster pallasii, Linnaemyia, 
Paradidyma, Senotainia rubriventris, Siphoplagia anomala, Spal- 
lanzania; Sarcophag.: Helicobia 4-setosa, Sarcophaga cimbicis; 
Musc.: Compsomyia, Graphomyia, Phormia regina, Pseudopyrellia. 

Lepidoptera (8)—Nymphal.: Vanessa atalanta; Lycaen.: Chry- 
sophanus; Papilion.; Eurymus, Pieris, Pontia; Hesperi.: Limo- 
chores taumas; Ctenuch.:; Scepsis; Noctu.: Heliothis armiger. 

Coleoptera (1)—Lampyr.: Chauliognathus pennsylvanicus. 

August 29, 1910, the following 11 species and 22 individuals 
were taken on the flowers: 

Long-tongued Bees (3: 10)—Ap.: Apis 6; Megachil.; Megachile 
brevis 3, petulans 1. 

Short-tongued Bees (1:2)—WHalict.; Halictus parallelus 2. 

Other Hymenoptera (4:7)—Bembic.: Bicyrtes ventralis 1; 
Scoli.: Elis 5-cincta 4; Philanth.: Eucerceris 1; Ichnewmon.: Cera- 
tosoma 1. 

Diptera (3:3)—Syrph.: Sphaerophoria 1; T'achin.: Senotainia 
rubriventris 1, Spallanzania 1. 


156 FLOWERS AND INSECTS—XXVI 


Polygonum persicaria (int).—Blooms May 10-October 26; 13 
visitors observed, August 4-September 15; Mis, W. 

Long-tongued Bees (1)—Bomb.: Bombus impatiens ¢ 9. 

Short-tongued Bees (4)—Halict.: Chloralictus sparsus ¢ 9, se, 
fq, versatus 9, fq, zephyrus 2, Halictus lerouxii ¢. 

Other Hymenoptera (4)—Philanth.: Cerceris finitima; Vesp.: 
Polistes annularis; Crabron.: Solenius; Ozxybel.: Notoglossa 
frontalis. 

Diptera (3)—Syrph.: Syritta ab; Bombylt.: Anthrax alternata 
f; Anthomy.: Phorbia acra. 

Lepidoptera (1)—Papilion.: Pontia. 


Polygonum scandens.—Blooms July 10-October 1; 64 species 
and 395 individuals, August 22-September 15; Mis, W. 

Long-tongued Bees (2:5)—Ceratin.: Ceratina 9, 1; Nomad.: 
Nomada vicina 0, 4. 

Short-tongued Bees (10: 169)—Halict.: Chloralictus sparsus ¢, 
144, versatus J 9, 3, zephyrus 1, 9; Sphecodini: Machaeris stygia 
3, 3; Prosopid.: Prosopis pygmaea 4, 1, saniculae J, 1, ziziae 9, 1; 
Collet.: Colletes americanus ¢, 1; Andren.: Pterandrena solidaginis 
?, 1; Panurg.: Pseudopanurgus compositarum J @, 5. 

Other Hymenoptera (22: 42)—Sphec.: Sphex gracilis 2, vul- 
garis 1; Philanth.: Cerceris finitima 1, fumipennis 1, Philanthus 
punctatus 1; Vesp.: Vespula germanica 1; Humen.: Ancistrocerus 
tigris 2, Eumenes fraternus 1, Leionotus perennis 1, scrophulariae 
3; Crabron.: Anacrabro 1, Lindenius errans 2, Rhopalum scutel- 
latum 1; Oxybel.: Notoglossa americana 2,-frontalis 4; Larr.: As- 
tatus bicolor 1, Larropsis 3; Pompil.: Lophopompilus atrox 1; 
Chrysid.: Hedychrum violaceum 2; Chalcid.: Leucospis 1, Peri- 
lampus cyaneus 2, platygaster 8. 

Diptera (25: 74)—Mycetophil.: Sciara atrata 19; Syrph.: Mi- 
lesia 3, Syritta 2; Tachin.: Actia 2, Archytas analis 1, aterrima 3, 
Cyphocera 4, Exorista confinis 1, Hypostena dunningii 1, Lin- 
naemyia 1, Pachyophthalmus signatus 1, Paradidyma 1, Senotainia 
trilineata 5, Siphoplagia flaccidirostris 1, Sturmia phyciodis 1, 
Trichopoda pennipes 7, Trichophora 1, Xanthomelana 2; Sarco- 
phag.: Helicobia helicis 5, Sarcophaga assidua 5, cimbicis 3; Musce.: 
Lucilia caesar 1, Musca 1, Pseudopyrellia 2; Ephydr.: Ochthera, 
pred, n, 1. 

Lepidoptera (4: 4)—Nymphal.: Vanessa atalanta 1; Lycaen.: 
Everes 1; Papilion.: Pieris 1; Hespert.: Limochores taumas 1. 

Coleoptera (1: 1)—Zampyr.: Chauliognathus pennsylvanicus 1. 


CHARLES ROBERTSON 157 


PONTEDERIACEAE. 


Pontederia cordata.—Blooms July 1-September 15; 2 visitors 
observed, August 8, September 15; Ma (Mas), R. 

Long-tongued Bees (1)—Eucer.: Florilegus ¢. 

Lepidoptera (1)—Papilion.: Eurymus. 


PORTULACACEAE. 


Claytonia virginica (2:177-8).—Blooms March 16—May 24; 
103 visitors observed, April 8-May 11; Mi, W. 

Long-tongued Bees (21)—Ap.; Apis se, ab; Bomb. (2) : Bombias 
auricomus, Bombus americanorum, consimilis, impatiens; Ceratin.: 
Ceratina ¢ 2, Zaodontomerus ¢; Megachil.: Ceratosmia ¢ 9, fq, 
Osmia atriventris 9, pumila ¢ 9; Nomad.: Gnathias cuneatus ¢, 
ovatus 9, fq, Heminomada 9, Holonomada affabilis 2, Nomada eres- 
sonii ¢ 9, illinoensis 4, sayi ¢ 9, Phor 9, Xanthidium luteoloides 
ob 2, type; Eucer.: Tetralonia belfragei ¢ 9, dilecta 9. 

Short-tongued Bees (37)—Halict. (2): Agapostemon radiatus 
se, splendens, Augochlora viridula, Chloralictus cressonii, illino- 
ensis, pilosus, sparsus, versatus sc, fq, zephyrus, Curtisapis coriacea 
se, Evylaeus arcuatus, foxii, pectoralis, truncatus, Halictus lerouxii 
se, ab, Odontalictus, Oxystoglossa confusa fq, type, similis, Sela- 
donia se, ab; Sphecodini: Sphecodes arvensis; Collet.: Colletes inae- 
qualis ¢ 9; Andren.: Andrena arabis 9, ecarlini ¢ 9, fq, dun- 
ningi 9, erythrogastra 2, erythronii 2, mandibularis Q nasonii 
9, pruni 2, sayi ¢ ?, Opandrena cressonii ¢ 2, se, fq, miserabilis 
3 9, se, fq, personata ¢, fq, Ptilandrena erigeniae ¢ 92, se, ab, 
oligolege, Trachandrena claytoniae ¢ 9, se, fq, type, forbesii 2, se, 
fq, rugosa ¢. 

Diptera (35)—Syrph.: Allograpta, Eristalis dimidiatus, lati- 
frons, Helophilus similis, Melanostoma obscurum, Mesogramma 
geminata, marginata, Paragus bicolor fq, Rhingia, Sphaerophoria, 
Syritta, Syrphus americanus, arcuatus, ribesii, torvus; Empid.: 
Empis humilis, nuda, otiosa; Bombyli.: Bombylius major fq; 
Conop.: Myopa vesiculosa; Sarcophag.: Calliphora erythrocephala, 
Cynomyia, Helicobia helicis, 4-setosa, Sarcophaga sinuata; Musc.: 
Lucilia sylvarum, Phormia regina, Pseudopyrellia; Anthomy.: 
Coenosia antica, Limnophora, Phorbia acra, platura; Scatophag.: 
Seatophaga; Seps.: Prochyliza, Sepsis. 

Lepidoptera (9)—Nymphal.: Phyciodes, Vanessa atalanta; 
Lycaen.: Everes; Papilion.: Eurymus, Iphiclides, Pieris, Pontia; 
Hesperi.: Thanaos icelus, juvenalis. 

Coleoptera (1)—Coccinell.: Megilla f, n. 


158 FLOWERS AND INSECTS—XXVI * 


May 5, 6, 9, 10, 1916, the first 100 individuals, representing 27 
species, taken on the flowers are as follows: 

Long-tongued Bees (4: 10)—Ap.: Apis 4; Bomb.: Bombus con- 
similis 1; Megachil.: Osmia pumila 2; Nomad.: Gnathias ovatus 3. 

Short-tongued Bees (15: 81)—Halict.: Chloralictus pilosus 5, 
sparsus 3, versatus 5, zephyrus 2, Evylaeus foxii 1, truncatus 1, 
Odontalictus 5; Andren.: Andrena arabis 1, nasonii 3, Opandrena 
eressonii 2, miserabilis 3, personata 5, Ptilandrena erigeniae 39; 
Trachandrena claytoniae 2, forbesii 4. 

Diptera (8: 9)—Syrph.: Mesogramma geminata 1; Conop.: 
Myopa vesiculosa 1; Sarcophag.: Helicobia helicis 1, Sarcophaga 
sinuata 1; Musc.: Lucilia sylvarum 2; Anthomy.: Limnophora 1, 
Phorbia acra 1, platura 1. 


Portulaca oleracea (int).—Blooms June 12—October 3; 3 vis- 
itors observed, August 11; Mi, Y. 

Short-tongued Bees (1)—Panurg.: Calliopsis andreniformis 9. 

Diptera (1)—Syrph.: Syritta. 

Coleoptera (1)—Malach.: Collops. 


PRIMULACEAE 

Dodecatheon meadia (8: 104-6).—Blooms April 23—May 30; 9 
species and 38 individuals observed, May 2-23; Ma, W. 

Long-tongued Bees (6: 35)—Bomb. (2): Bombias auricomus 
4, separatus 4, Bombus americanorum 21, impatiens 2; Hucer.: 
Tetralonia dilecta %, 3; Anthophor.: Anthophora 9, se, 1. 

Short-tongued Bees (2:2, 9, ¢, n)—Halict.: Augochlora viri- 
dula 1, Oxystoglossa confusa 1. 

Lepidoptera (1)—Papilion.: Eurymus 1. 


Samolus floribundus.—Blooms June 15-—October 8; 1 visitor 
observed, September 9; Mi, W. 
Diptera (1)—EHmpid.: Parempis 1. 


Steironema ciliatum (8:106—-8).—Blooms June 11—August 6; 
2 visitors observed, July 1, 16, 18; Mi, Y. 

Short-tongued Bees (2: 8)—Halict.: Chloralictus versatus Q, cf, 
1; Macropid.: Macropis ¢ 9, ef, 7. 


Steironema lanceolatum (6: 47).—Blooms June 10—July 15; 1 
visitor observed, June 12—July 1; Mi, Y. 

Short-tongued Bees (1)—Macropid.: Macropis steironematis J 
Q, ef, ab, type. 


Steironema quadriflorum (6: 48).—Blooms June 4-August 23; 
2 visitors observed, July 6, 10; Mi, Y. 


& CHARLES ROBERTSON 159 


Short-tongued Bees (2, 9, ¢)—Halict.: Chloralictus versatus; 
Macropid.: Macropis, ab. 
RANUNCULACEAE 
Actea alba (10: 229).—Blooms May 3-23; 3 visitors observed, 
May 8, 9; Mi, W. 
Short-tongued Bees (3, 9)—WHalict.: Chloralictus zephyrus 
¢c, Evylaeus pectoralis c, ab, Oxystoglossa confusa f. 


Anemonella thalictroides.—Blooms April 2—May 22; 21 visitors 
observed, April 2-28; Mi, W. 

Long-tongued Bees (5)—Ap.: Apis; Ceratin.: Ceratina ¢ 9, 
in cop; Megachil.: Diceratosmia 9, sc, Osmia pumila 9, ¢; Nomad.: 
Gnathias ovatus 9. 

Short-tongued Bees (11)—Halict. (2): Chloralictus sparsus sf, 
versatus sf, fq, Curtisapis coriacea, Evylaeus pectoralis, Halictus 
lerouxii, Oxystoglossa confusa sf, Seladonia sf, fq; Collet.: Colletes 
inaequalis ¢; Andren.: Andrena carlini 9, Opandrena cressonii 9, 
Trachandrena claytoniae ¢. 

Diptera (4)—Syrph.: Brachypalpus frontosus, Eristalis dimi- 
diatus, Sphaerophoria f; Bombyli.: Bombylius major fq. 

Coleoptera (1)—wNitidul.: Cereus fq. 


Aquilegia canadensis.—Blooms April 30—July 5; 1 visitor 
observed, May 12; Ma (0), R. 
Birds (1)—Trochil.: Trochilus. 


Clematis pitcheri (7: 105).—Blooms June 3—July 31; 4 visitors 
observed, June 22—July 7; Ma, R. 

Long-tongued Bees (3)—Bomb.: Bombias auricomus 9%, se, 
Bombus americanorum Q 9, se, consimilis 9. 

Diptera (1)—Syrph.: Volucella vesiculosa. 


Clematis virginiana (7: 103-—5).—Blooms June 23—August 16; 
60 visitors observed, July 21-30; Pol (Mis), W. 

On staminate flowers :— 

Long-tongued Bees (2)—Ap.: Apis; Bomb.: Bombus impatiens 
%, se. 

Short-tongued Bees (9)—Halict.: Agapostemon radiatus ¢, 
Chloralictus illinoensis ¢, fq, sparsus ¢ 2, sc, ab, versatus ¢ Q, se, 
zephyrus ¢ 9, se, fq, Halictus lerouxii 4; Sphecodini: Sphecodes 
arvensis ¢ 9, fq, clematidis 2, type; Prosopid.: Prosopis ziziae 
J 2. 

Other Hymenoptera (10)—Sphec.: Ammobia ichneumonea, 
Isodontia apicalis, Sceliphron; Scoli.: Seolia bicincta; Eumen.: 


160 FLOWERS AND INSECTS—XXVI 


Ancistrocerus tigris, Leionotus foraminatus; Crabron.: Lindenius 
errans, Solenius; Oxybel.: Oxybelus 4-notatus; Nysson.: Nysson 
plagiatus. 

Diptera (87)—Stratiomy.: Stratiomyia unilimbata; Syrph.: 
Allograpta, Eristalis transversus, Mesogramma marginata, Platy- 
chirus quadratus, Sphaerophoria, Syritta ab; Conop.: Oncomyia; 
Tachin.: Archytas analis, aterrima, Belvosia unifasciata, Linn- 
aemyia, Ennyomma globosa, Pachyophthalmus signatus fq, Phor- 
antha purpurascens, Senotainia trilineata ab, Siphona, Sturmia 
phyciodis; Sarcophag.: Calliphora erythrocephala, Helicobia he- 
licis; Musc.: Compsomyia ab, Graphomyia, Lucilia sericata, Musca 
ab, Protocalliphora, Pseudopyrellia; Anthomy.: Calythea, Homal- 
omyia canicularis, prostrata, Limnophora, Phorbia acra fq, platura; 
Agromyz.: Lobioptera; Seps.: Nemopoda, Piophila, Prochyliza, 
Sepsis. 

Lepidoptera (1)—Lycaen.: Cyaniris. 

Hemiptera (1)—Caps.: Lopidea. 


Delphinium tricorne (8: 120-2).—Blooms April 23—June 7; 21 
visitors observed, May 4-15. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (9)—Bomb. (9): Bombias auricomus ab, 
separatus, Bombus americanorum ab, consimilis, impatiens; Cera- 
ton.: Ceratina 9, n; Hucer.: Tetralonia dilecta ¢ 9, se, ab, in cop; 
Anthophor.: Anthemoessa ¢, Anthophora Q, se. 

Short-tongued Bees (2, 9, ce, n)—Halict.: Agapostemon radia- 
tus, Halictus lerouxii. 

Lepidoptera (8, n)—Nymphal.: Anosia; Papilion.: Euphoe- 
ades, Eurymus, Jasoniades, Papilio; Hespert.: Atrytone zabulon, 
Epargyreus; Sphing.: Deilephila. 


Hepatica acutiloba (16: 153).—Blooms March 18—April 27; 18 
visitors observed, March 27—April 19; Mi, W. 

Long-tongued Bees (2)—Ap.: Apis se, fq; Ceratin.: Zaodonto- 
merus . 

Short-tongued Bees (9)—Halict.: Chloralictus sparsus 9, ver- 
satus 9; Collet.: Colletes inaequalis ¢; Andren.: Andrena carlini 
3 2, erythronii ¢, mandibularis J, tridens 3, type, Opandrena 
miserabilis 9, Trachandrena rugosa ¢ @, fq. | 

Diptera (7)—Syrph.: Brachypalpus frontosus sf, fq, Hristalis 
dimidiatus sf, Syrphus americanus f; Bombylt.: Bombylius major 
fq; Tachin.: Gonia capitata; Musc.: Pseudopyrellia fq; Anthomy.: 
Phorbia platura. 


CHARLES ROBERTSON 161 


~>Isopyrum biternatum (5: 173).—Blooms March 20—May 2; 52 
visitors observed, March 26—April 30; Mi, W. 

Long-tongued Bees (7)—Ap.: Apis se, fq; Bomb.: Bombus 
americanorum 9; Ceratin.: Ceratina ¢, Zaodontomerus ¢; Mega- 
chil.: Osmia pumila ¢ 9; Nomad.: Nomada sayi ¢ 2; Eucer.: Tetra- 
lonia belfragei ¢ 9. 

Short-tongued Bees (25)—Halict. (2): Agapostemon radiatus, 
Chloralictus caeruleus, cressonii, obscurus, pilosus, sparsus se, ver- 
satus se, ab, zephyrus ab, Curtisapis coriacea, forbesii, Evylaeus 
foxii, pectoralis, 4-maculatus, Halictus lerouxii se, Oxystoglossa 
confusa se, fq, pura, Seladonia se, ab; Collet.: Colletes inaequalis 
o; Andren.: Andrena carlini ¢ 9, fq, sayi ¢ 9, fq, Opandrena 
miserabilis 9, ¢, Ptilandrena erigeniae ¢ 9, Trachandrena clay- 
toniae ¢, forbesii 2, rugosa ¢ 9, fq. 

Other Hymenoptera (1)—Sapyg.: Sapyga. 

Diptera (14)—Syrph.: Chilosia capillata sf, Eristalis dimidia- 
tus, Helophilus similis, Melanostoma obscurum, Mesogramma gemi- 
nata, marginata f, n, Sphaerophoria f, n, Syrphus americanus sf, 
ribesii, Xylota fraudulosa; Empid.: Empis nuda; Bombyli.; Bom- 
bylius major ab; Tachin.: Gonia capitata; Musc.: Pseudopyrellia. 

Coleoptera (4, f,n)—Anthic.: Corphyra terminalis; Chrysomel: 
Diabrotica vittata; Coccinell.: Megilla; Oedemer.: Asclera rufi- 
collis. 

Hemiptera (1)—Caps.: Lygus. 


Myosurus minimus.—Blooms April 7—May 17; 1 visitor ob- 
served, May 8; Mi, Y. 
Short-tongued Bees (1)—Halict.: Chloralictus zephyrus 9, 1. 


Ranunculus abortivus (7: 108-9).—Blooms March 31—June 9; 
24 visitors observed, April 8—-May 11; Mi, Y. 

Long-tongued Bees (4)—Ap.: Apis; Bomb.: Bombus ameri- 
canorum 9; Ceratin.: Ceratina ¢; Nomad.: Gnathias ovatus 9. 

Short-tongued Bees (10)—Halict. (2): Chloralictus cressonii, 
pilosus, sparsus se, fq, versatus, zephyrus, Evylaeus pectoralis, Oxy- 
stoglossa confusa, similis, Seladonia; Andren.: Opandrena per- 
sonata J, fq. 

Diptera (8)—Syrph.: Chilosia petulea, Mesogramma marginata 
fq, Paragus bicolor fq, Pipiza nigribarba, Sphaerophoria fq; 
Tachin.: Apinops, Siphona fq; Sarcophag.: Helicobia helicis. 

Coleoptera (2)—Coccinell.: Coccinella 9—-notata, Megilla f. 


Ranunculus fascicularis (7: 107-8).—Blooms March 21-May 
20; 45 visitors observed, April 11—May 5; Mi, Y. 


162 FLOWERS AND INSECTS—XXVI 


Long-tongued Bees (9)—Ap. Apis; Ceratin.: Ceratina J Q, fq, 
in cop, Zaodontomerus ¢'; Megachil.: Osmia illinoensis <j, type, 
pumila ¢ 9, fq; Nomad.: Gnathias ovatus ¢ 2, Holonomada superba 
Jo 2, fq, Nomada sayi 6'; Eucer.: Tetralonia dilecta ¢. 

Short-tongued Bees (15)—Halict. (2) : Agapostemon radiatus se, 
fq, Chloralictus pilosus, pruinosus se, sparsus, versatus se, fq, 
Curtisapis coriacea, Evylaeus pectoralis sc, Halictus lerouxii, Odon- 
talictus sc, Oxystoglossa confusa se, fq, Paralictus simplex type, 
Seladonia se; Andren.: Iomelissa 4, Opandrena cressonii 2, se, mis- 
erabilis ¢. 

Diptera (18)—Syrph.: Chilosia capillata, Eristalis transversus 
f, Melanostoma mellinum, Mesogramma geminata fq, marginata sf, 
fq, Orthoneura pictipennis, Paragus bicolor, Pipiza femoralis fq, 
Sphaerophoria sf, Syrphus americanus, arcuatus, Xylota fraudu- 
losa; Bombyli.: Bombylius major; Tachin.: Gonia capitata; Sar- 
cophag.: Sarcophaga cimbicis; Musc.: Pseudopyrellia; Anthomy.: 
Coenosia antica, Phorbia acra fq. 

Lepidoptera (2)—Papilion.: Eurymus; Hesperi.: Thanaos 
juvenalis. 

Coleoptera (1)—Oedemer.: Asclera ruficollis f, n. 


Ranunculus recurvatus.—Blooms April 30-—May 21; 5 visitors 
observed, May 10, 11, Mi, Y. 

Long-tongued Bees (1)—Nomad.: Nomada parva ¢ 9. 

Short-tongued Bees (4)—Halict. (2): Chloralictus obscurus, 
Oxystoglossa confusa, similis; Andren.: Opandrena cressonii <. 


Ranunculus septentrionalis (7: 105-7).—Blooms April 8-May 
24; 52 visitors observed, April 12—May 7; Mi, Y. 

Long-tongued Bees (7)—Ceratin.: Ceratina ¢ 9, se, ab, Zaodon- 
tomerus 4; Megachil.: Ceratosmia 9, sc, Diceratosmia 2, ce, Moni- 
losmia ¢', Osmia pumila ¢ 9, se, ab; Hucer.: Tetralonia belfragei ¢. 

Short-tongued Bees (16)—Halict. (2): Chloralictus obscurus 
se, fq, pilosus se, sparsus, zephyrus, Curtisapis coriacea se, fq, 
Evylaeus pectoralis sec, 4-maculatus fq, Halictus lerouxii sec, Odon- 
talictus se, Oxystoglossa confusa se, ab, pura, Seladonia sc; Sphe- 
codini: Proteraner ranunculi 4, type; Andren.: Opandrena cres- 
sonii 9, sec, personata 4, Ptilandrena polemonii ¢ 9, ab. 

Diptera (19)—Syrph.: Chilosia capillata ab, Melanostoma ob- 
scurum, Mesogramma geminata, Pipiza femoralis, nigribarba, 
Sphaerophoria, Syrphus americanus, arcuatus, ribesii, torvus; 
Bombylt.: Bombylius major, pulchellus; Tachin.: Siphona; Musce.: 
Morellia; Anthomy.: Anthomyia radicum, pluvialis, Hylemyia 
dilatata fq, Mydaea diruta, Phorbia platura. 


CHARLES ROBERTSON 163 


Lepidoptera (3)—Hespert.: Thanaos brizo, juvenalis, Thorybes 
bathyllus. 

Coleoptera (7)—Anthic.: Corphyra terminalis sf; Carab.: 
Lebia n; Chrysomel.: Diabrotica vittata f, n; Coccinell.: Megilla 
f, n; Curculion. (n): Centrinus perscillus f, Idiostethus subcalvus; 
Oedemer.: Asclera ruficollis f, n. 


Thalictrum dasycarpum (anemophilous).—One visitor ob- 
served, June 3. 
Long-tongued Bees (1)—Ap.: Apis ¢, fq. 


RHAMNACEAE 

Ceanothus americanus (2: 303-4).—Blooms May 27-—July 2; 
121 visitors observed, June 16—July 4; Pol, W. 

Long-tongued Bees (6)—Bomb.: Bombias auricomus 9, ¢, sep- 
aratus 2 9%, sc; Ceratin.: Ceratina ¢; Megachil.: Neotrypetes trun- 
catus ¢ 9, sc; Megachile brevis 9, se; Nomad.: Centrias ameri- 
canus 9. 

Short-tongued Bees (18)—Halict.: Chloralictus sparsus 2, se 
versatus ¢ 9, sc, Curtisapis forbesii 4, Evylaeus arcuatus 9, se 
type, pectoralis 9, sc, truncatus 9, se, Oxystoglossa confusa 9, se 
Seladonia 9, sc; Sphecodini: Sphecodes minor 9, Sphecodium 
cressonii ¢ 2; Prosopid.: Prosopis pygmaea ¢ Q, ziziae ¢ 9; Collet.: 
Colletes eulophi ¢ 9, willistonii 2; Andren.: Andrena platyparia 9, 
Trachandrena crataegi 9, se; Macropid.: Macropis ¢ 2, fq; Fare? 
Calliopsis andreniformis ¢. 

Other Hymenoptera (35)—Sphec.: Isodontia apicalis, Sceli- 
phron, Sphex nigricans; Scoli.: Elis 5-cincta; Philanth.: Cerceris 
clypeata, compacta, compar, finitima, robertsonii, rufinoda; Vesp.: 
Polistes variatus ; Humen.: Ancistrocerus tigris, Eumenes fraternus, 
Leionotus dorsalis, foraminatus, fulvipes, fundatus, illinoensis, 
ziziae ; Crabron.: Solenius ; Oxybel.: Notoglossa americana, frontalis, 
Oxybelus packardii, 4-notatus; Larr.: Tachysphex acutus, belfragei ; 
Pompil.: Anoplius illinoensis, Ceropales robinsonii, Poecilopompilus 
navus, Pompiloides marginatus, Psammochares relativus, tenebro- 
sus; Chrysid.: Hedychrum violaceum; Chalcid.: Leucospis; Ten- 
thredin.: Hylotoma humeralis. 

Diptera (42)—Mycetophil.: Sciara atrata; Stratiomy.: Nemo- 
telus; Syrph.: Allograpta, Mesogramma geminata, marginata, 
Orthoneura nitida, Paragus bicolor, Sphaerophoria, Syritta, Syr- 
phus americanus, Tropidia mamillata, quadrata; Empid.: Par- 
empis; Bombyli.: Anthrax sinuosa; Conop.: Conops brachyr- 
rhynchus, Oncomyia, Stylogaster biannulata, Zodion fulvifrons; 


164 FLOWERS AND INSECTS—XXVI 


Tachin.: Archytas analis, aterrima, Cistogaster occidua, Exorista 
confinis, Linnaemyia, Ocyptera tenuis, Pachyophthalmus signatus, 
Paradidyma, Phorantha purpurascens, Siphona, Spallanzania, 
Trichophora, Xanthomelana; Sarcophag.: Helicobia helicis, Sareo- 
phaga sinuata; Musc.: Lucilia caesar, Morellia, Musca, Phormia 
regina, Pseudopyrellia; Anthomy.: Limnophora, Phorbia acra; 
Seps.: Sepsis; Trypet.: Trypeta humilis. 

Lepidoptera (2)—Lycaen.: Thecla calanus, sylvinus. 

Coleoptera (14)—Cerambyc.: Typocerus sinuatus; Chrysomel.: 
Diabrotica atripennis, 12—punctata, Pachybrachys; Cwrculion.: 
Centrinites, Centrinus picumnus, scutellum-album; Dermest.: 
Cryptorhopalum haemorrhoidale; Elater.: Limonius; Lampyr.: 
Telephorus scitulus; Malach.: Attalus; Mordell.: Mordella mar- 
ginata; Oedemer.: Oxacis; Scarabae.: Trichius piger. 

Hemiptera (4)—Caps.: Calocoris, Lygus; Cyan.: Canthophorus; 
Lygae.: Lygaeus. 


Rhamnus lanceolata (9: 157-9).—Blooms April 23-May 14; 51 
visitors observed on May 14; Mis, Y. 

Long-tongued Bees (4)—Ap.: Apis; Bomb.: Bombus american- 
orum 9; Ceratin.: Ceratina 6; Nomad.: Gnathias cuneatus 9. 

Short-tongued Bees (23)—Halict. (2): Agapostemon radiatus 
fq, Augochlora viridula, Chloralictus illinoensis, pilosus se, fq, 
pruinosus se, sparsus se, ab, versatus se, fq, zephyrus se, Curtisapis 
forbesii sec, Evylaeus arcuatus sc, foxii se, fq, Halictus lerouxii se, 
Oxystoglossa confusa se, fq, pura se, Seladonia se, ab; Sphecodini: 
Sphecodium cressonii; Andren.: Andrena erythrogastra ¢, mandib- 
ularis 9, nasonii 9, sc, type, Opandrena cressonii ¢ 9, sce, ab, miser- 
abilis 4, personata ¢ 9, se, fq, Trachandrena crataegi ¢. 

Other Hymenoptera (3)—Humen.: Ancistrocerus tigris, Eu- 
menes fraternus; Jenthredin.: Dolerus arvensis. 

Diptera (21)—Syrph.: Allograpta fq, Helophilus similis, Meso- 
gramma geminata ab, marginata, Orthoneura nitida, Pipiza 
femoralis, Sphaerophoria fq, Syritta, Syrphus americanus, ribesii, 
Xanthogramma felix; Empid.: Rhamphomyia priapulus; T'achin.: 
Peleteria; Sarcophag.: Cynomyia, Sarecophaga cimbicis, sinuata; 
Musc.: Lucilia caesar, sericata; Anthomy.: Phorbia acra fq, platura 
fq; Scatophag.: Scatophaga. 


ROSACEAE 


Agrimonia striata—Blooms July 3-September 7; 1 visitor 
observed, July 24; Mi, Y. 
Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, se. 


CHARLES ROBERTSON 165 


Amelanchier canadensis (15: 446-7).—Blooms March 26—May 
1; 51 visitors observed, April 10-22; Mis, W. 

Long-tongued Bees (6)—Ap.: Apis se, ab; Bomb.: Bombus 
americanorum 9, ridingsii 9; Ceratin.: Ceratina @&; Nomad.: 
Nomada denticulata ¢, illinoensis ¢. 

Short-tongued Bees (27)—Halict. (2); Agapostemon radiatus, 
Chloralictus caeruleus type, cressonii, pilosus se, fq, sparsus, 
versatus se, ab, zephyrus ab, Evylaeus arcuatus se, fq, foxii, Halictus 
lerouxii, Seladonia sc; Collet.: Colletes inaequalis ¢ 9, fq; Andren.: 
Andrena carlini ¢ 9, erythrogastra ¢ 9, fq, erythronii ¢, man- 
dibularis 4, salicis ¢ 9, fq, salictaria 9, fq, sayi ¢ 9, fq, Opandrena 
eressonii ¢° 2, sc, ab, miserabilis ¢ 9, ab, Parandrena ¢ 9, fq, 
Trachandrena claytoniae ¢ 9, fq, forbesii ¢ 9, fq, type, hippotes 
Jo 2, mariae 4, rugosa ¢. 

Other Hymenoptera (1)—Z'enthredin.: Dolerus arvensis. 

Diptera (17)—Syrph.: Brachypalpus frontosus, Eristalis 
aeneus, dimidiatus fq, transversus, Helophilus similis, Mesogramma 
geminata, marginata, Platychirus quadratus, Sphaerophoria, 
Syrphus americanus fq; Bombyli.: Bombylius major; Tachin.: 
Euphorocera claripennis, Gonia ecapitata; Sarcophag.: Cynomyia 
fq; Musc.: Pseudopyrellia; Anthomy.: Hammomyia; Scatophag.: 
Seatophaga fq. 


Aruncus sylvester (15: 437; 16: 165-9).—Blooms May 24—June 
20; 78 visitors observed, June 4-20; Mis, W. 

On staminate flowers (43) :— 

Long-tongued Bees (3)—Megachil.: Neotrypetes truncatus ¢; 
Nomad.: Centrias americanus ?, Holonomada affabilis ¢. 

Short-tongued Bees (6)—Halict.: Chloralictus versatus 9; 
Prosopid.: Prosopis pygmaea 9; Andren.: Opandrena personata 
9, serotina ¢, Trachandrena nuda Q, se, spiraeana 9, se, ab, type, 
oligolege. 

Other Hymenoptera (3)—Eumen.: Eumenes fraternus; Cra- 
bron.: Anacrabro; Ozrybel.: Notoglossa frontalis. 

Diptera (7)—Syrph.: Chilosia pallipes, Chrysogaster nigripes, 
Sphegina rufiventris; Empid.: Empis distans fq; Conop.: Zodion 
nanellum ; Agromyz.: Phytomyza palpalis type; Oscin.: Siphonella 
cinerea. 

Coleoptera (23)—Bruch.: Bruchus  hibisei; Cerambye.: 
Aemaeops directa, Leptura exigua, vittata, Typocerus badius, 
lugubris; Chrysomel.: Disonycha; Curculion.: Centrinus picumnus 
ab; Elater.: Seracosomus; Malach.: Anthocomus, Attalus fq, 
Melyris fq; Mordell.: Mordellistena biplagiata fq, lutea, ornata, 


166 FLOWERS AND INSECTS—XXVI 


tosta, Pentaria fq; Nitidul.: Epurea labilis, truncatella; Oedermer.: 
Asclera puncticollis; Scarabae.: Trichius affinis, piger, Valgus. 

Hemiptera (1)—Caps.: Lopidea. 

On staminate and pistillate flowers (19) :— 

Short-tongued Bees (10)—Halict.: Chloralictus sparsus ¢ 9, 
sc, ab, Evylaeus arcuatus 9, se, foxii 9; Prosopid.: Prosopis illino- 
ensis ¢ 9, fq, saniculae ¢ 9, fq, sayi ¢ Y, ab, ziziae 9, fq; Andren. 
(2): Andrena platyparia, Opandrena cressonii, Trachandrena 
crataegi, sc, ab. 

Coleoptera (9)—Cerambyc.: Euderees ab, Leptura pubera; 
Dermest.: Anthrenus musaeorum ab, Cryptorhopalum haemorrhoi- 
dale fq, triste ab, Orphilus ab; Mordell.: Mordella marginata ab, 
Mordellistena aspersa fg, pubescens. 

On pistillate flowers (16) :— 

Long-tongued Bees (4)—Ceratin.: Ceratina 9, Zaodontomerus 
3; Nomad.: Gnathias cuneatus 2, ovatus 9. 

Short-tongued Bees (7, 2)—Halict.: Agapostemon radiatus, 
Chloralictus tegularis, Curtisapis coriacea, Evylaeus pectoralis, 
Oxystoglossa confusa, pura; Andren.: Andrena pruni. 

Other Hymenoptera (1)—Crabron.: Blepharipus. 

Diptera (3)—Syrph.: Allograpta, Syrphus ribesii; Tachin.: 
Epigrimyia floridensis. 

Coleoptera (1)—Cerambyc.: Molorchus. 

The following 35 species and 70 individuals were taken on the 
flowers, June 8 and 11: 

Long-tongued Bees (4: 5)—Ceratin.: Ceratina 2, Zaodontomerus 
1; Nomad.: Gnathias cuneatus 1, ovatus 1. 

Short-tongued Bees (14:42)—Halict.: Agapostemon radiatus 
1, Chloralictus sparsus 7, tegularis 1, Curtisapis coriacea 1, 
Evylaeus arcuatus 1, foxii 1, pectoralis 2, Oxystoglossa confusa 1, 
pura 1; Prosopid.: Prosopis illinoensis 3, saniculae 4, sayi 7, ziziae 
2; Andren.: Andrena platyparia 1, pruni 1, Opandrena cressonii 1, 
Trachandrena crataegi 5. 

Other Hymenoptera (1:1)—Crabron.: Blepharipus 1. 

Diptera (3:3)—Syrph.: Allograpta 1, Syrphus ribesii 1; 
Tachin.: Epigrimyia floridensis 1. 

Coleoptera (10: 19)—Cerambyc.: Eudereces 1, Leptura pubera 
1, Molorchus 2; Dermest.: Anthrenus musaeorum 1, Cryptorho- 
palum haemorrhoidale 3, triste 7, Orphilus 1; Mordell.: Mordella 
marginata 1, Mordellistena aspersa 1, pubescens 1. F 


Crataegus coccinea? (15:444-5).—Blooms April 13—May 22; 
56 visitors observed, May 4-12; Mis, W. 


CHARLES ROBERTSON 167 


Long-tongued Bees (5)—Ap.: Apis sc, fq; Bomb.: Bombus 
americanorum 9, fq, impatiens 9; Ceratin.: Ceratina ¢; Nomad.: 
Centrias americanus ¢. 

Short-tongued Bees (15)—Halict. (2): Chloralictus sparsus, 
versatus, zephyrus fq, Halictus lerouxii, Odontalictus, Seladonia 
fq; Andren.: Andrena dunningii 9, se, fq, erythrogastra 4, sayi ¢ 
9, se, fg, Opandrena cressonii ¢ 9, miserabilis ¢ 9, se, ab, personata 
do, fq, Trachandrena claytoniae ¢, fq, crataegi ¢ 9, ab, type, hip- 
potes ¢. 

Other Hymenoptera (3)—Vesp.: Polistes pallipes, fq, variatus; 
Tiphi.: Tiphia elypeata, type. 

Diptera (25)—Stratiomy.: Microchrysa; Syrph.: Eristalis 
aeneus, dimidiatus, Helophilus similis, Mallota cimbiciformis, Meso- 
gramma geminata, Myiolepta strigilata fq, Pipiza nigribarba, 
Psilota, Syrphus torvus; Empid.: Empis avida type, Rhamphomyia 
priapulus, sordida; Bombyli.: Bombylius major, pulchellus ; Conop.: 
Myopa vesiculosa; Tachin.: Gonia capitata; Sarcophag.: Calliphora 
erythrocephala, Cynomyia, Sarcophaga sinuata; Musc.: Comp- 
somyia, Lucilia caesar, Morellia, Phormia regina, Pseudopyrellia fq. 

Lepidoptera (2)—Nymphal.: Anosia, Vanessa huntera. 

Coleoptera (6)—Cerambyc.: Molorchus fq, in cop; Chrysomel.: 
Diabrotica vittata; Coccinell.: Coccinella sanguinea, Hippodamea 
15-maculata; Oedemer.: Asclera puncticollis; Scarabae.: Euphoria 
fulgida. 


Crataegus crus-galli (15: 445-6).—Blooms May 1—June 1; 75 
visitors observed, May 17-29; Mis, W. 

Long-tongued Bees (9)—Ap.: Apis se, ab; Bomb. (2) : Bombias 
auricomus, separatus, Bombus americanorum, impatiens; Ceratin.: 
Ceratina ¢; Megachil.: Prochelostoma ¢, Anthemois 4; Eucer.: 
Tetralonia dilecta ¢. 

Short-tongued Bees (26)—WHalict. (9, sc): Chloralictus pilosus 
ab, sparsus ab, tegularis fq, versatus ab, zephyrus, Evylaeus 
foxii fq, pectoralis, Oxystoglossa similis fq, Seladonia ab; Prosopid.: 
Prosopis crataegi <4, illinoensis ¢, pygmaea ¢ 9, ab, saniculae ¢, 
ziziae ¢ 9, ab; Collet.: Colletes inaequalis 9, sc; Andren.: Andrena 
dunningii 9, se, erythrogastra 9, mandibularis 9, se, sayi 92, se, 
Opandrena cressonii, ¢ 9, se, fq, miserabilis ¢ 9, sc, ab, personata 
do 9, se, ab, Parandrena 9, Trachandrena claytoniae 9, se, fq, 
crataegi J 9, se, ab, forbesii 9, se. 

Other Hymenoptera (10)—Vesp.: Polistes pallipes; Eumen.: 
Ancistrocerus capra, tigris, Eumenes fraternus fq, Leionotus 
anormis, foraminatus, Symmorphus debilis, walshianus; Crabron.: 
Rhopalum scutellatum ; Pemphredon.: Cemonus. 


168 FLOWERS AND INSECTS—XXVI 


Diptera (23)—Stratiomy.: Stratiomyia quaternaria; Syrph.: 
Didea, Eristalis dimidiatus, latifrons, transversus, Helophilus 
similis, Mallota cimbiciformis, Mesogramma geminata, Orthoneura 
nitida, Syritta, Volucella vesiculosa, Xanthogramma emarginata; 
Empid.: Empis distans, Rhamphomyia mutabilis; Bombyli.: Bom- 
bylius major; Sarcophag.: Cynomyia, Helicabia) 4-setosa; Musc.: 
Morellia, Phormia regina, terraenovae; Anthomy.: Phorbia acra, 
platura; Ortal.: Camptoneura. 

Lepidoptera (38)—Nymphal.: Anosia; Male Cyaniris; 
Papilion.: Laertias. 

Coleoptera (4)—Buprest.: Acmaeodera culta; Cerambyc.: Mo- 
lorchus; Cler.: Enoplium; Scarabae.: Euphoria fnleide, 


Crataegus mollis (15: 443-4)—Blooms April 10-May 17; 73 
visitors observed, April 27—May 9; Mis, W. 

Long-tongued Bees (4)—Ap.: Apis se, ab; Bomb.: Bombus 
americanorum @; Ceratin.: Ceratina ¢; Eucer.: Tetralonia 
dilecta 3 9. 

Short-tongued Bees (28)—Halict. (2): Augochlora viridula, 
Chloralictus cressonii, pilosus se, sparsus se, ab, versatus, zephyrus 
se, ab, Evylaeus arcuatus se, foxii se, pectoralis sc, fq, Halictus 
lerouxil se, fq, Oxystoglossa confusa se, Seladonia se, fq; Collet.: 
Colletes inaequalis ¢ 9; Andren.: Andrena dunningii 9, sc, ab, 
mandibularis 9, se, nasonii <4, pruni 9, se, sayi ¢ 9, se, fq, Opan- 
drena cressonii ¢ 9, se, ab, miserabilis ¢ 9, fq, Trachandrena clay- 
toniae ¢ 9, fq, crataegi ¢ 9, ab, forbesii 9, sc, hippotes ¢, nuda ¢ 
9, rugosa J, fq. 

Other Hymenoptera (4)—Vesp.: Polistes pallipes, variatus, 
Vespula germanica; Eumen.: Ancistrocerus tigris. 

Diptera (30)—Syrph.: Brachypalpus frontosus, Chilosia punc- 
tulata, Chrysogaster ontario, Criorhina umbratilis, Eristalis dimid- 
iatus, Helophilus similis, Myiolepta strigilata fq, Orthoneura picti- 
pennis, Pipiza nigribarba, Psilota, Syrphus americanus, Xylota 
fraudulosa; Empid.: Empis avida, humilis, nuda, otiosa, Rham- 
phomyia piligeronis, priapulus fq, sordida fq, in cop, tersa; 
Bombyli.: Bombylius major; Conop.: Myopa vesiculosa fq, in cop; 
Tachin.: Alophora grandis, cotype; Sarcophag.: Calliphora erythro- 
cephala, vomitoria, Cynomyia; Musc.: Morella, Phormia regina, 
Pseudopyrellia; Anthomy.: Phorbia platura. 

Lepidoptera (1)—Nymphal.: Polygonia interrogationis. 

Coleoptera (6)—Cerambyc.: Molorchus ; Chrysomel.: Diabrotica 
vittata, Disonycha; Cler.: Enoplium; Oedemer.: Asclera puncti- 
collis ; pyrite gs Euphoria fulgida. 


CHARLES ROBERTSON 169 


Fragaria virginiana illinoensis (15: 440).—Blooms April 13- 
June 11; 57 visitors observed, April 25-May 15; Mi, W. 

Long-tongued Bees (12)—Ap.: Apis; Bomb.: Bombus im- 
patiens 9; Ceratin.: Ceratina gi 2, se, fq; Megachil.: Osmiini: 
Osmia atriventris ¢ 9, se, illinoensis ¢, pumila 9, se; Coelioxyini: 
Coelioxys 8-dentata ¢; Nomad.: Gnathias ovatus 2, Holonomada 
superba 4, Nomada illinoensis 2; Melect.: Bombomelecta 2; Eucer.: 
Tetralonia dilecta ¢. 

Short-tongued Bees (15)—Halict. (2): Chloralictus pilosus 
se, fq, tegularis, versatus sc, fq, Evylaeus pectoralis se, fq, Odon- 
talictus se, Oxystoglossa confusa se, pura se, similis se, ab, Seladonia 
se, ab; Sphecodini: Machaeris stygia; Prosopid.: Prosopis pygmaea 
Q, ziziae g; Andren.: (2, sc): Andrena nasonii fq, Opandrena 
eressonii, Trachandrena forbesii. 

Other Hymenoptera (1)—Vesp.: Polistes variatus. 

Diptera (21)—Stratiomy.: Nemotelus; Syrph.: Eristalis trans- 
versus, Helophilus similis, Mesogramma marginata, Orthoneura 
pictipennis fq, Paragus bicolor fq, Sphaerophoria fq, Tropidia 
mamillata; Empid.: Empis humilis, Rhamphomyia priapulus; 
Bombyli.: Bombylius pulchellus; Conop.: Myopa vesiculosa, Zodion 
fulvifrons; Tachin.: Gymnosoma, Peleteria; Sarcophag.: Helicobia 
helicis, Sarcophaga sinuata fq; Musc.: Lucilia caesar, sylvarum; 
Anthomy.: Phorbia acra, platura. 

Lepidoptera (7)—Nymphal.: Phyciodes; Lycaen.: Everes; 
Papilion.: Eurymus, Pieris; Hesperi.: Pholisora catullus, Thanaos 
juvenalis; Noctu.: Plusia simplex. 

Hemiptera (1)—WNab.: Coriseus. 


Geum canadense (15: 439).—Blooms June 18—-September 27; 
22 visitors observed, July 6-11; Mi, W. 

Long-tongued Bees (1)—Pasit.: Holeopasites illinoensis 9. 

Short-tongued Bees (9)—Halict.: Chloralictus pilosus Q, 
pruinosus 9, sec, sparsus 9, se, tegularis 2, versatus 2, se, Oxysto- 
glossa similis ¢ 9, se, Seladonia ¢; Prosopid.: Prosopis pygmaea ¢; 
Panurg.: Calliopsis andreniformis ¢. 

Other Hymenoptera (6)—Philanth.: Cerceris compacta; 
Eumen.: Eumenes fraternus, Leionotus histrionalis, ziziae; Cre- 
bron.: Solenius; Chrysid.: Hedychrum violaceum. 

Diptera (3)—Syrph.: Mesogramma marginata; Tachin.: Ocyp- 
tera dosiades ; Sarcophag.: Helicobia helicis. 

Coleoptera (2)—Cerambyc.: Euderces ; Mordell.: Mordella mar- 
ginata. 

Hemiptera (1)—Corimelaen.: Corimelaena pulicaria. 


170 FLOWERS AND INSECTS—XXVI 


Geum vernum (15:439-40).—Blooms April 12—May 24; the 
first 100 individuals, belonging to 18 species, were taken May 1-15; 
Mi, Y. 

Long-tongued Bees (2:17)—Ceratin.: Zaodontomerus 4, 1; 
Nomad.: Nomada parva 6 Q, 16. 

Short-tongued Bees (13: 67)—Halict. (2) : Chloralictus sparsus 
7, tegularis 1, versatus 4, Evylaeus foxii 1, pectoralis 3, Oxystoglossa 
confusa sec, 3, similis sc, 6, Seladonia 3; Sphecodini: Sphecodium 
eressonii 1; Prosopid. (¢): Prosopis pygmaea 2, sayi 1, ziziae 2; 
Andren.: Opandrena personata ¢ 9, 33. 

Diptera (3:16)—Syrph.: Mesogramma geminata 2, Paragus 
bicolor 3; Tachin.: Siphona 11. 


Gillenia stipulacea (16: 169-70)—Blooms June 3-July 7; 25 
visitors observed, June 15-30; Ma, W. 

Long-tongued Bees (11)—Ceratin.: Ceratina 9, se, ab, Zaodon- 
tomerus ¢'; Megachil.: Trypetini: Neotrypetes truncatus J Q, se, 
fq; Osmiini: Alcidamea simplex ¢ 9, se, ab, truncata @, se, Leu- 
cosmia 9, sc, Osmia atriventris 9, distincta 2, sc, ab; Megachilini: 
Megachile addenda 2, se; Nomad.: Holonomada affabilis 2; Antho- 
phor.: Anthemoessa <j. 

Short-tongued Bees (6)—-Halict.: Chloralictus sparsus 9, ¢, fq, 
n, versatus 9, sc, Evylaeus pectoralis ¢ 9, sc, 4-maculatus 9; 
Panurg.: Calliopsis andreniformis ', Heterosarus ¢ 9, se, ab. 

Diptera (4)—Syrph. (f, n): Baccha fuscipennis, Pipiza nigri- 
barba; Bombylt.: Bombylius atriceps; Conop.: Stylogaster bian- 
nulata fq. 

Lepidoptera (4)—Papilion.: Euphoeades, Laertias; Hespert.: 
Thorybes bathyllus, pylades. 


Potentilla canadensis (15:441)—Blooms April 23-June 17; 
30 visitors observed, May 14-June 2; Mi, Y. 

Long-tongued Bees (8)—Bomb.: Bombus americanorum 9; 
Ceratin.: Ceratina ¢ 9, fq, Zaodontomerus ¢'; Stelid.: Microstelis 
3; Megachil.: Alcidamea simplex (J, Osmia pumila 2; Nomad.: 
Centrias americanus 3“, Nomada parva ¢. 

Short-tongued Bees (10)—Halict. (2): Chloralictus versatus, 
Evylaeus pectoralis, Odontalictus, Oxystoglossa confusa sec, ab, 
similis se, ab, Seladonia; Sphecodini: Proteraner, Sphecodium 
eressonii; Prosopid.: Prosopis ziziae ¢:; Andren.: Opandrena per- 
sonata J 9, ab. 

Other Hymenoptera (4)—Humen.: Leionotus anormis, clypeatus 
fq, histrionalis, ziziae. 


CHARLES ROBERTSON 171 


Diptera (7)—Syrph.: Paragus tibialis, Syritta; Tachin.; 
Apinops, Cistogaster occidua ; Sarcophag.: Helicobia helicis ; Muse.: 
Lucilia caesar; Anthomy.: Phorbia platura. 

Lepidoptera (1)—Nymphal.: Phyciodes, 


Potentilla monspeliensis norvegica.—Blooms May 19-Novem- 
ber 19; 23 visitors observed, July 25, 27; Mi, Y. 

Short-tongued Bees (13)—Halict.: Agapostemon radiatus ¢, 
fq, Chloralictus pilosus 4, sparsus 9, sc, fq, versatus ¢ 9, se, fq, 
Evylaeus pectoralis 2, Odontalictus ¢, Oxystoglossa similis 9, se, 
Seladonia ¢ 9, fq; Sphecodini: Sphecodes arvensis 2, Sphecodium 
cressonii 2 ; Prosopid.: Prosopis pygmaea ¢ 9, fq, ziziae 9; Panurg.: 
Calliopsis andreniformis ¢. 

Other Hymenoptera (1)—Ozybel.: Notoglossa frontalis fq. 

Diptera (8)—Syrph.: Mesogramma geminata, marginata, 
Sphaerophoria fq, Syritta; Conop.: Onecomyia; Tachin.: Gymno- 
prosopa; Sarcophag.: Helicobia helicis; Anthomy.: Phorbia acra. 

Lepidoptera (1)—Lycaen.: Everes. 


Prunus americana (15: 435-6).—Blooms March 31—May 5; 76 
visitors observed, April 17-29; Mis, W. 

Long-tongued Bees (14)—Ap.: Apis se, ab; Bomb.: Bombus 
americanorum 92, impatiens 9; Ceratin.: Ceratina 4, ab, Zaodonto- 
merus 4, fq; Nomad.: Gnathias ovatus ¢, Heminomada ¢ 9, fq, 
Holonomada superba ¢, Nomada denticulata ¢, illinoensis ¢ 9, 
Phor ¢, Xanthidium luteoloides ?, luteolum 9; Lucer.: Tetralonia 
dilecta ¢ 9, ab. 

Short-tongued Bees (26)—Halict (2): Agapostemon radiatus, 
Chloralictus pilosus se, ab, pruinosus se, ab, sparsus, tegularis, ver- 
satus se, ab, zephyrus sc, Evylaeus arcuatus, Halictus lerouxii se, 
Seladonia se; Sphecodini: Sphecodes arvensis; Prosopid.: Prosopis 
pygmaea ¢'; Collet.: Colletes inaequalis ¢ 2, fq; Andren.: Andrena 
erythrogastra ¢ 9, ab, erythronii 9, se, illinoensis ¢, fq, mandibu- 
laris 2, pruni J, salicis 4, sayi f 9, se, fq, Opandrena ecressonii ¢ 9, 
se, ab, miserabilis ¢ 9, se, ab, Parandrena ¢ 2, ab, Trachandrena 
claytoniae ¢ 2, se, ab, forbesii 4, hippotes ¢ 9, se, fq. 

Other Hymenoptera (3)—Vesp. Polistes pallipes, variatus; 
Ichneumon.: Bathycetes. 

Diptera (23)—Syrph.: Brachypalpus frontosus, Chrysogaster 
ontario, Eristalis dimidiatus, Helophilus similis, Mesogramma 
geminata, marginata ab, Orthoneura nitida, Platychirus hyper- 
boreus, Sphaerophoria, Syrphus americanus, torvus; Empid.: 
Empis otiosa fq, Rhamphomyia priapulus; Bombyli.: Bombylius 


172 FLOWERS AND INSECTS—XXVI 


major; Conop.: Myopa vesiculosa; Tachin.: Euphorocera claripen- 
nis, Gonia capitata fq; Sarcophag.: Cynomyia fq; Musc.: Phormia 
regina, Pseudopyrellia; Anthomy.: Anthomyiella, Phorbia platura 
ab; Oscin.: Chlorops versicolor. 

Lepidoptera (7)—Nymphal.: Anosia, Vanessa atalanta, huntera ; 
Papilion.: Jasoniades, Pontia fq; Hesperi.: Thanaos juvenalis; 
Noctu.: Plusia simplex. 

Coleoptera (3)—Cerambyc.: Molorchus; Chrysomel.: Orso- 
dachna; Scarabae.: Valgus. 


Prunus serotina (15: 436-7).—Blooms April 9—May 23; 64 vis- 
itors observed, April 9—May 18; Mis, W. * 

Long-tongued Bees (7)—Ap.: Apis se, ab; Bomb. (2): Bom- 
bias separatus, Bombus americanorum fq, impatiens; Ceratin.: 
Zaodontomerus ¢'; Nomad.: Nomada illinoensis 9; Eucer.: Tetra- 
lonia dilecta ¢ 9. 

Short-tongued Bees (23)—Halict.: Agapostemon radiatus ¢, 
fq, Augochlora viridula 9, Chloralictus cressonii 9, se, pilosus Q, 
sc, sparsus Q, se, fq, versatus 9, se, fq, zephyrus 9, se, Curtisapis 
coriacea 9, se, fq, Halictus lerouxii 9, se, fq, Oxystoglossa similis 9, 
se, fq, Seladonia 9, sc; Collet.: Colletes inaequalis 9; Andren.: 
Andrena erythrogastra ?, pruni 9, se, fq, type, sayi 9, se, Opan- 
drena cressonil ¢ 9, se fq, miserabilis 9, se, ab, Trachandrena clay- 
toniae 9, se, fq, crataegi 4, forbesii 9, sc, hippotes ¢, nuda Q, se, 
rugosa ¢. 

Other Hymenoptera (2)—Vesp.: Polistes pallipes; Tenthredin.: 
Dolerus sericeus. 

Diptera (29)—Bibion.: Scatopse notata fq; Simulc.: Simulium; 
Stratiomy.: Stratiomyia quaternaria; Syrph.: Brachyopa, Eristalis 
aeneus fq, dimidiatus, Mallota cimbiciformis, Myiolepta strigilata, 
Orthoneura nitida, pictipennis, Pipiza nigribarba, Sphaerophoria, 
Sphegina rufiventris, Syritta, Syrphus ribesii; Empid.: Rham- 
phomyia sordida; Conop.: Myopa vesiculosa; Tachin.: Gonia eapi- 
tata, Siphona; Sarcophag.: Calliphora erythrocephala, Cynomyia, 
Sarcophaga cimbicis; Musc.: Lucilia caesar, sericata, Phormia 
regina, Pseudopyrellia; Anthomy.: Phorbia acra, platura; Scato- 
phag.: Seatophaga. 

Lepidoptera (2)—Nymphal.: Anosia, Vanessa huntera. 

Coleoptera (1)—Cerambyc.: Molorchus. 

Extra-floral nectaries—April 25, 1894, the following insects 
were observed sucking: 

Short-tongued Bees (6)—Halict. (2): Chloralictus illinoensis, 
sparsus, versatus; Andren.: Andrena erythrogastra Q, illinoensis J, 
Opandrena miserabilis 9. 


CHARLES ROBERTSON 173 


Other Hymenoptera (2, 3)—Formic.: Formica fusca; Myrmic.: 
Cremastogaster. 

Diptera (2)—Syrph.: Criorhina umbratilis; Sarcophag.: 
Cynomyia. 


Pyrus coronaria (15: 442-3).—Blooms April 10—May 23; 9 vis- 
itors observed, May 2-12; Ma, R. 

Long-tongued Bees (7)—Ap.: Apis fq; Bomb. (2): Bombias 
auricomus, separatus fq, Bombus americanorum ab, impatiens ab; 
Megachil.: Ceratosmia 9; Eucer.: Tetralonia dilecta 3, fq. 

Lepidoptera (2)—Nymphal.: Anosia; Hesperi.: Thanaos Juve- 
nalis. 


Rosa humilis (15 : 441-2) —Blooms May 15—July 29 ; 27 visitors 
observed, May 22—June 20; Ma, R. 

Long-tongued Bees (8, ¢)—Bomb.: Bombias separatus 2 9, 
Bombus americanorum Q, ab, impatiens 9; Ceratin.: Ceratina 9; 
Megachil.: Megachile brevis 9; Hucer.: Tetralonia dilecta 9, ab; 
Anthophor.: Anthemoessa ?, ab, Clisodon 9. 

Short-tongued Bees (6, 9, ¢)—Halict.: Agapostemon radiatus, 
viridulus, Augochlora fervida, Chloralictus versatus, Oxystoglossa 
confusa; Andren.: Opandrena cressonii. 

Diptera (11, f)—Syrph.: Allograpta n, Mallota cimbiciformis, 
posticata, Mesogramma geminata n, Baccha fuscipennis n, Rhingia 
n, Syrphus americanus n, Volucella vesiculosa fq, n, Xylota chaly- 
bea n, fraudulosa n; Bombylt.: Anthrax sinuosa. 

Coleoptera (2, £)—Chrysomel.: Diabrotica 12-punctata n; 
Scarabae.: Trichius piger ab. 


Rosa setigera (15: 442) —Blooms June 9—July 21; 35 visitors 
observed, June 14-July 7; Ma, R. 

Long-tongued Bees (12, c)—Ap.: Apis fq; Bomb.: Bombias 
auricomus 2 %, separatus 2 9, ab, Bombus americanorum ¢ 9, fq, 
impatiens $9; Megachil. (2): Osmia pumila, Megachile addenda, 
mendica fq, Xanthosarus; Eucer.: Tetralonia dilecta 9, fq, rosae 
?, type, Anthophor.: Anthemoessa Q, ab. 

Short-tongued Bees (6, 2, c)—Halict.: Agapostemon radiatus, 
viridulus fq, Augochlora viridula, Chloralictus versatus, Curtisapis 
eoriacea fq, Evylaeus arcuatus. 

Diptera (16, f)—Syrph.: Allograpta n, Eristalis transversus, 
Mallota cimbiciformis fq, posticata, Milesia fq, Myiolepta nigra n, 
Pipiza pistica n, pulchella n, Syritta n, Syrphus americanus fq, n, 
Temnostoma n, Xylota angustiventris n, chalybea n; Bombyli.: 
Anthrax sinuosa, Argyramoeba albofasciata, oedipus. 

Coleoptera (1, £)—Scarabae.: Trichius piger. 


174 FLOWERS AND INSECTS—XXVI 


Rubus canadensis.—Blooms May 2—June 29; 48 visitors ob- 
served, May 10-26; Mi, W. 

Long-tongued Bees (16)—Ap.: Apis fq; Bomb.: Bombus ameri- 
canorum 9, ab; Ceratin.: Ceratina ¢ 9; Megachil.: Osmiini: 
Alcidamea simplex ¢ 2, sc, Ceratosmia 2, se, Hoplhitis ¢ 9, se, Osmia 
atriventris °, sc, cordata 9, pumila 9, sc, fq; Megachilini: Mega- 
chile brevis ¢', mendica 4’; Coelioxyini: Coelioxys sayi ¢' 2; Nomad.: 
Centrias americanus 9, Holonomada superba ¢ 9, fq; Hucer.: 
Tetralonia dilecta J 9, fq, rosae ¢ 9. 

Short-tongued Bees (15)—Halict. (9) : Agapostemon viridulus 
se, Chloralictus versatus sc, Evylaeus pectoralis sc, Odontalictus, 
Oxystoglossa similis se; Andren.: Andrena carlini 2, nasonii Q, se, 
pruni 2, sc, Opandrena cressonii 9, sc, personata ¢', Trachandrena 
claytoniae 9, sc, crataegi 9, sc, forbesii 9, hippotes 9, sc, nuda 
9, 8C. 

Other Hymenoptera (2)—Eumen.: Leionotus foraminatus, 
scrophulariae. 

Diptera (6)—Syrph.: Eristalis dimidiatus, latifrons, Tropidia 
quadrata; Bombyli.: Bombylius atriceps fq; Conop.: Zodion fulvi- 
frons; Sarcophag.: Helicobia helicis. 

Lepidoptera (9)—Nymphal.: Charidryas; Papilion.: Hurymus; 
Hesperi.: Atrytone zabulon, Epargyreus, Limochores taumas, 
Pholisora catullus, hayhurstii, Thanaos juvenalis, Thorybes pylades. 


Rubus occidentalis (15:487-8)—Blooms May 3—June 9; 22 
visitors observed, May 12-29; Mi, W. 

Long-tongued Bees (10)—Ap.: Apis fq; Bomb.: Bombias sep- 
aratus 9, Bombus americanorum 9; Megachil.: Alcidamea simplex 
J, Osmia pumila 9, Megachile brevis 9; Nomad.: Gnathias ovatus 
2, Holonomada affabilis ¢, fq, superba ¢ 9, fq; Hucer.: Tetralonia 
dilecta ¢ Q. 

Short-tongued Bees (5, 2)—Halict.: Odontalictus, Oxystoglossa 
confusa sec, Seladonia; Andren.: Andrena earlini sc, Opandrena 
eressonii. 

Other Hymenoptera (2)—Humen.:.Leionotus anormis; Cra- 
bron.: Solenius. 

Diptera (1)—Tachin.: Archytas aterrima. 

Lepidoptera (4)—Nymphal.: Charidryas; Hesperi.: Limochores 
taumas, Pholisora catullus, Polites. 


Rubus villosus (15: 488-9).—Blooms May 2—July 1; 89 visitors 
observed, May 12—-June 16; Mi, W. 

Long-tongued Bees (23)—Ap.: Apis se, ab; Bomb. (9): Bom- 
bias auricomus, separatus sc, Bombus americanorum sc, fq, im- 


CHARLES ROBERTSON 175 


patiens, Psithyrus variabilis; Ceratum.: Ceratina ¢ 9, se, fq; 
Megachil.: Osmiini: Alcidamea simplex ¢ 9, sc, Ceratosmia 9, se, fq, 
Hoplitis 9, sc, Osmia pumila 2, se; Megachilini: Anthemois , 
Megachile brevis ¢', mendica ‘2; Coelioxyini: Coelioxys 8—dentata 
3b, sayi 6; Nomad.: Gnathias ovatus 2, Holonomada affabilis ¢ 9, 
fq, superba ¢ 2, fq, Nomada sayi 2; Hucer.: Tetralonia dilecta ¢ 9, 
in cop, rosae 6; Anthophor.: Anthemoessa Q. 

Short-tongued Bees (27)—Halict. (2): Agapostemon radiatus, 
Augochlora fervida se, viridula se, Chloralictus sparsus ¢, n, ver- 
satus ¢c, n, Curtisapis forbesii sc, Evylaeus pectoralis se, fq, Halictus 
lerouxii, Odontalictus se, Oxystoglossa confusa se, similis se, Paralic- 
tus simplex, Seladonia se, fq; Sphecodini: Sphecodes arvensis, 
Sphecodium cressonii; Prosopid.: Prosopis pygmaea 9; Collet.: 
Colletes aestivalis ¢', inaequalis 9, se; Andren. (9): Andrena ear- 
lini, dunningii, mandibularis, sayi sc, Opandrena personata sc, 
Trachandrena claytoniae, crataegi sc, forbesii sec, nuda. 

Other Hymenoptera (7)—WSphec.: Isodontia apicalis, Sphex 
nigricans; Humen.: Leionotus arvensis, histrionalis, vagus, ziziae; 
Crabron.: Solenius. 

Diptera (16)—Syrph.: Didea f, n, Eristalis dimidiatus f, n, 
Mesogramma marginata f, n, Paragus bicolor n, Sphaerophoria, 
Syritta f, Syrphus ribesii f, n, Tropidia mamillata, Volucella vesicu- 
losa fq; Hmpid.: Empis distans; Bombyli.: Aldrichia f, fq, n, 
Bombylius atriceps; Conop.: Zodion fulvifrons; Tachin.: Archytas 
aterrima, Ocyptera tenuis, Spallanzania. 

Lepidoptera (13)—Nymphal.: Anosia, Charidryas, Vanessa 
atalanta; Lycaen.: Chrysophanus; Papilion.: Eurymus, Pontia; 
Hesperi.: Atrytone zabulon, Epargyreus, Euphyes metacomet, 
Limochores taumas, Polites fq, Thanaos juvenalis; Ctenuch.: 
Scepsis. 

Coleoptera (3)—Scarabae.: Euphorea fulgida f, n, sepulchralis 
f, n, Trichius piger sf. 


RUBIACEAE 


Cephalanthus occidentalis (4: 65-7).—Blooms June 27—August 
25; 77 visitors observed, July 5-August 17; Mas, W. 

Long-tongued Bees (25)—Ap.: Apis ab; Bomb.: Bombias auri- 
comus @ g, fq, scutellaris 9, separatus ¢' 9 3, ab, Bombus ameri- 
canorum ¢ @ &, se, ab, impatiens ¥, sc, fq, ridingsii ¢, Psithyrus 
variabilis 9; Ceratin.: Ceratina 2; Megachil.: Megachile brevis ¢ 9, 
fq, mendica 9, c, petulans 9, 6—dentata J 9, Sayapis sayi 2; Nomad.: 
Cephen 9; Epeol. (f 2) : Triepeolus concavus, concolor fq, lunatus; 
Eucer.: Epimelissodes obliqua ¢ 2, se, fq, Florilegus ?, Melissodes 


176 FLOWERS AND INSECTS—XXVI 


bimaculata <j, petalostemonis 9, variabilis 9, se, Peponaies o3 
Emphor.: Emphor 9. 

Short-tongued Bees (6)—Halict.: Agapostemon radiatus , 
texanus 9, viridulus 2, Halictus lerouxii 2, Odontalictus 9; Pro- 
sopid.: Prosopis ziziae 9, f, n. 

Other Hymenoptera (4)—Sphec.: Sphex nigricans; Scoli.: Elis 
5-eincta; Humen.: Leionotus arvensis; Pompil.: Prioenemoides ful- 
vicornis. 

Diptera (10)—Syrph.: Eristalis latifrons, tenax ab, Sphaero- 
phoria, Syritta, Volucella evecta, vesiculosa; Conop.: Conops 
brachyrrhynchus, Physocephala texana, tibialis; Musc.: Musca. 

Lepidoptera (29)—Nymphal.: Anosia ab, Argynnis, Basilarchia 
archippus, Cereyonis, Phyciodes ab, Vanessa atalanta ab, cardui, 
huntera; Lycaen.: Chrysophanus ab, Cyaniris, Everes, Uranotes; 
Papilion.: Euphoeades, Eurymus, Laertias, Papilio ab, Pieris, 
Pontia, Zerene; Hesperi.: Atalopedes, Atrytone delaware, zabulon, 
Epargyreus ‘aye Limochores taumas ab, Polites, Thanaos juvenalis, 
Thorybes bathyllus; Arcti.: Utetheisa; Ctenuch.: Scepsis. 

Coleoptera (f, n)—Coccinell.: Hippodamea 15-maculata; 
Scarabae.: Trichius piger. 

Hemiptera (1)—Lygae.: Oncopeltus. 

July 9, 19138, the following 74 individuals, of 21 species, were 
taken on the flowers: 

Long-tongued Bees (10:56)—Ap.: Apis 32; Megachil.: Mega- 
chile brevis 5, petulans 2, 6-dentata 1, Sapapis sayi 1; E'peol.: Tri- 
epeolus concavus 3, concolor 5, lunatus 2; Hucer.: Epimelissodes 
obliqua 2, Melissodes bimaculata 3. 

Short-tongued Bees (1: 1)—Halict.: Halictus lerouxii 1. 

Other Hymenoptera (3: 4)—Sphec.: Sphex nigricans 2; Scoli.: 
Elis 5-cincta 1; Humen.: Leionotus arvensis 1. 

Diptera (1: 1)—Conop.: Physocephala texana 1. 

Lepidoptera (6:12)—Nymphal.: Argynnis 1, Phyciodes 1; 
Lycaen.: Chrysophanus 1; Papilion.: Eurymus 2, Pontia 6; 
Hesperi.: Thorybes pathyllae ale 


Galium aperine.—Blooms May 4—June 22; 1 visitor observed, 
May 15; Mi, W. 
Short-tongued Bees (1)—Halict.: Chloralictus obscurus 9. 


Galium trifidum.—Blooms May 22—July 9; 8 visitors observed, 
June 26; Mi, W. 

Short-tongued Bees (1)—Prosopid.: Prosopis pygmaea ¢. 

Diptera (7)—Syrph.: Mesogramma marginata, Pipiza pubes- 
cens, Syritta; Tachin.: Cistogaster oeccidua, Euphorocera eclaripen- 
nis; Sarcophag.: Helicobia helicis; Anthomy.: Coenosia antica. 


CHARLES ROBERTSON 177 


Houstonia purpurea calycosa (5: 275).—-Blooms May 18—July 
4; 37 visitors observed, May 25—June 12; Mi, W. 

Long-tongued Bees (9)—Ap.: Apis; Bomb.: Bombias separa- 
tus 9; Ceratin.: Ceratina ¢ 9, sec, ab; Megachil.: Neotrypetes pro- 
ductus 4, type, Alcidamea simplex 4; Nomad. (2) : Centrias ameri- 
canus, Holonomada affabilis, superba; Eucer.: Tetralonia rosae ¢. 

Short-tongued Bees (9)—Halict. (2): Chloralictus albipennis 
s¢, pilosus se, versatus sc, Evylaeus pectoralis, Odontalictus, Oxysto- 
glossa confusa sc, similis sc, Seladonia; Panurg.: Calliopsis andreni- 
formis ¢ 9, se, ab. 

Diptera (9)—Syrph.: Eristalis dimidiatus, Mesogramma margi- 
nata, Paragus bicolor, tibialis, Sphaerophoria sc, ab, Syritta; 
Bombyli.: Bombylius atriceps; Tachin.: Archytas analis, Spallan- 
zania. 

Lepidoptera (7)—Nymphal.: Charidryas fq; Lycaen.: Chryso- 
phanus fq; Papilion.: Pieris, Pontia; Hesperi.: Ancyloxypha ab, 
Pholisora catullus, Polites. 

Coleoptera (3)—Curculion. (f, n): Centrinites, Centrinus seu- 
tellum-album ; Scarabae.; Trichius piger sf, ab. 


RUTACEAE 

Ptelea trifoliata (9: 155-7) —Blooms May 7—June 23; 68 vis- 
itors observed, May 22—June 8; Mis, W. 

Long-tongued Bees (5)—Ap.: Apis se, fq; Bomb.: Bombias 
auricomus 9, sc; Ceratin.: Ceratina 9, se, ab; Nomad.: Gnathias 
ovatus 9; Eucer.: Tetralonia dilecta Q, sc. 

Short-tongued Bees (28)—Halict. (2): Agapostemon radiatus, 
viridulus, Chloralictus cressonii sc, pilosus, sparsus sc, tegularis se, 
versatus sc, Curtisapis coriacea, Halictus lerouxii, Odontalictus, 
Oxystoglossa confusa; Sphecodini: Drepanium fq; Prosopid.: 
Prosopis sayi 4, ziziae ¢; Collet.: Colletes eulophi 4, inaequalis 9, 
se; Andren.: Andrena platyparia ¢ 9, sc, Opandrena cressonii Q, 
miserabilis 9, sc, fq, serotina 9, se, fq, Trachandrena clay- 
toniae 9, crataegi 9, se, forbesii 9, heraclei 9, se, hippotes 
9, se, ab, type, nuda Q, se, fq, rugosa 9, spiraeana 9. 

Other Hymenoptera (14)—Sphec.: Sphex vulgaris; Scoli.: 
Campsomeris; Philanth.: Cerceris compar; Eumen.: Ancistrocerus 
tigris, unifasciatus, Eumenes fraternus, Leionotus clypeatus, 
foraminatus, scrophulariae, ziziae; Crabron.: Solenius; Oxybel.: 
Notoglossa americana, inornata; Chalcid.: Leucospis. 

Diptera (19)—Stratiomy.: Stratiomyia meigenii; Syrph.: Mal- 
lota cimbiciformis, Myiolepta nigra, Sphaerophoria, Syritta, Volu- 
cella vesiculosa; Empid.: Empis distans, levicula; Conop.; Conops 


178 FLOWERS AND INSECTS—XXVI 


brachyrrhynchus, Dalmannia, Myopa vesiculosa; Tachin.: Archytas 
analis, aterrima, Linnaemyia, Trichopoda pennipes; Sarcophag.: 
Helicobia helicis; Musc.: Pseudopyrellia; Anthomy.: Anthomyiella, 
Phorbia platura fq. 

Lepidoptera (2)—Nymphal.: Neonympha; Agarist.: Alypia. 

May 27, 1911, the following 22 species and 44 individuals were 
taken on the flowers: 

Long-tongued Bees (4: 21)—Ap.: Apis 6; Bomb.: Bombias auri- 
comus 1; Ceratin.: Ceratina 13; Hucer.: Tetralonia dilecta 1. 

Short-tongued Bees (11: 16)—Halict.: Agapostemon viridulus 
1, Chloralictus sparsus 3, tegularis 1; Prosopid.: Prosopis ziziae 1; 
Collet.: Colletes eulophi 1; Andren.: Opandrena eressonii 1, 
miserabilis 2, serotina 1, Trachandrena crataegi 2, heraclei 2, 
hippotes 1. 

Other Hymenoptera (4:4)—Sphec.: Sphex vulgaris 1; 
Philanth.: Cerceris compar 1; Crabron.: Solenius 1; Oxybel.: Noto- 
glossa americana, 1. 

Diptera (3: 3)—Syrph.: Sphaerophoria 1, Syritta 1; Empid.: 
Empis levicula 1. 


Zanthoxylum americanum (7:109-11)—Blooms March 31- 
April 28; 59 visitors observed, April 9-25; Mis, Y. 

On staminate flowers (7) :— 

Short-tongued Bees (2, 9)—Halict.: Chloralictus cressonii, 
Curtisapis coriacea. 

Other Hymenoptera (38)—Vesp.: Polistes pallipes; Pompil.: 
Cryptocheilus conicus; Chrysid.: Holochrysis hilaris. 

Diptera (1)—Syrph.: Brachypalpus frontosus. 

Coleoptera (1)—Oedemer.: Asclera puncticollis. 

On staminate and pistillate flowers (16) :— 

Long-tongued Bees (4, ab)—Ap.: Apis se; Megachil.: Osmia 
pumila ¢; Nomad.: Gnathias cuneatus ¢ 9, type, Xanthidium lu- 
teolum ¢ 9. 

Short-tongued Bees (10)—Halict. (9) : Chloralictus sparsus se, 
ab, versatus se, ab, Oxystoglossa confusa; Collet.: Colletes inae- 
qualis { 9, ab, in cop; Andren.: Andrena sayi 3, ab, Opandrena 
eressonii ¢' 9, ab, miserabilis ¢ 9, ab, dasha claytoniae J 9, 
ab, forbesii ¢' 9, fq, rugosa <, fq. 

Diptera (2)—Syrph.: Mesogramma geminata ab; Tachin.: 
Gonia ecapitata ab. 

On pistillate flowers (36) :— 

Long-tongued Bees (8)—Ceratin.: Zaodontomerus ¢; Megachil.: 
Ceratosmia ¢' 9, ab; Nomad.: Gnathias ovatus 0, fg, Nomada cres- 


CHARLES ROBERTSON 179 


sonii ¢, denticulata ¢ 9, illinoensis ¢ 9, fq, sayi ¢ 9, ab, Xan- 
thidium luteoloides ¢. 

Short-tongued Bees (12)—Halict. (2): Augochlora viridula, 
Chloralictus caeruleus fq, zephyrus fq, Evylaeus arcuatus, foxii fq, 
Halictus lerouxii, Odontalictus, Paralictus platyparius; Andren.: 
Andrena mandibularis 4, pruni ¢ 2, fq, Opandrena dubia ¢, fq, 
Trachandrena hippotes <. 

Diptera (15)—Syrph.; Eristalis dimidiatus, Helophilus similis, 
Orthoneura nitida, Sphaerophoria, Syrphus americanus, Xantho- 
gramma felix; Conop.: Myopa vesiculosa; T'achin.: Archytas analis, 
Gonia exul ab, Phorichaeta, Phyto; Sarcophag.: Helicobia 4-setosa ; 
Musc.: Phormia regina, Pseudopyrellia fq; Scatophag.: Scatophaga. 

Lepidoptera (1)—Noctu.: Plusia simplex. 


SALICACEAE 


Populus deltoides (anemophilous).—One visitor observed, 
April 14. 
Long-tongued Bees (1)—Ap.: Apis ¢, ab. 


Populus tremuloides (anemophilous).—One visitor observed, 
April 6. 
Long-tongued Bees (1)—Ap.: Apis ¢, ab. 


Salix amygdaloides.—Blooms April 4~May 9; 97 visitors ob- 
served, April 10-28; Mis, Y. 

On staminate flowers: 

Long-tongued Bees (4)—Ceratin.: Ceratina ¢, Zaodontomerus 
do; Nomad.: Heminomada 9, Nomada sayi ¢. 

Short-tongued Bees (13)—Halict. (2): Chloralictus illinoensis, 
Evylaeus arcuatus sc, fq, truncatus sc, Oxystoglossa confusa se; 
Sphecodini: Sphecodium cressonii; Collet.: Colletes inaequalis ¢ 
9, sc; Andren.: Andrena illinoensis ¢ 2, se, fq, pruni 9, salicacea 9, 
se, salictaria 2, sc, Opandrena personata 4, Trachandrena crataegi 
d, nuda Q, se. 

Other Hymenoptera (2)—Vesp.: Vespula germanica; Pompil.: 
Cryptocheilus conicus. 

Diptera (8)—Syrph.: Chrysogaster ontario, Helophilus lati- 
frons, Psilota, Tropidia mamillata, Xylota fraudulosa; Empid.: 
Rhamphomyia irregularis; Bombyli.: Bombylius major; Muse.: 
Morellia. 

On staminate and pistillate flowers: 

Long-tongued Bees (7)—Ap.: Apis se, ab; Nomad.: Gnathias 
cuneatus ¢ 9, fq, ovatus ¢ 9, fq, Nomada denticulata ¢ 9, ab, 
illinoensis ¢ 9, ab, Phor ¢, ab, Xanthidium luteolum ¢ 9, fq. 


180 FLOWERS AND INSECTS—XAVI 


Short-tongued Bees (23)—Halict. (2): Agapostemon radiatus, 
Chloralictus pilosus se, fq, sparsus sec, ab, versatus se, ab, zephyrus 
se, ab, Evylaeus foxii se, ab, pectoralis sc, fq, Halictus lerouxii se, 
ab, Odontalictus, Oxystoglossa pura, Seladonia se, fq; Andren. 
(fg @): Andrena dunningii, erythrogastra se, ab, mandibularis se, 
salicis sc, sayi fq, Opandrena cressonii se, ab, in cop, miserabilis 
se, ab, Parandrena sc, ab, Trachandrena eclaytoniae se, fq, forbesii 
se, fq, hippotes se, fq, mariae se, fq. 

Diptera (7)—Syrph.: Brachypalpus frontosus, Chilosia punetu- 
lata, Sphaerophoria; Empid:: Rhamphomyia limbata fq, priapulus 
fq; Conop.: Myopa vesiculosa ab; Musc.: Pseudopyrellia. 

On pistillate flowers: 

Long-tongued Bees (3)—Bomb.: Bombus americanorum 9; 
Megachil.: Osmia pumila 4; Nomad.: Nomada salicis 4, type. 

Short-tongued Bees (6)—Halict. (2): Chloralictus ecressonii, 
tegularis fq, Curtisapis forbesii; Andren. (3): Andrena earlini, 
erythronii, Trachandrena rugosa. 

Other Hymenoptera (5)—Vesp.: Vespula germanica; Pompil.: 
Cryptocheilus conicus; Ichneumon.: Glypta rufiscutellaris fq; 
Tenthredin.: Dolerus arvensis, Macrophya epinota, pleuricincta, 
Macroxyela. 

Diptera (18)—Syrph.: Eristalis dimidiatus, Melanostoma ob- 
scurum, Mesogramma marginata, Platychirus quadratus, Syrphus 
americanus, torvus; Empid.: Rhamphomyia gilvipilosa; Conop.: 
Myopa pilosa ab, in cop; Tachin.: Gonia capitata, exul; Sarcophag: 
Cynomyia; Anthomy.: Coenosia antennalis, Hyetodosia, Mydaea 
fusca, Phorbia aera, platura fq; Scatophag.: Secatophaga; Seps.: 
Sepsis. 

Coleoptera (1)—Chrysomel.: Orsodachna. 


Salix cordata (9:76-7)—Blooms March 18—April 30; 123 
visitors observed, March 25—April 29; Mis, Y. 

On staminate flowers: 

Long-tongued Bees (6)—Megachil.: Osmia pumila ¢ 9, ab; 
Nomad.: Nomada denticulata , type, illinoensis ¢ 9, fq, type, sayi 
3, Xanthidium luteoloides ¢, luteolum ¢ 9, ab. 

Short-tongued Bees (16)—Halict. (9): Augochlora viridula, 
Chloralictus illinoensis, tegularis, Odontalictus, Oxystoglossa con- 
fusa fq, similis type; Andren.: Andrena dunningii <4, erythro- 
gastra gi 9, se, ab, in cop, mandibularis <4, type, pruni 4, fq, 
salicacea ¢ 9, fq, sayi J 2 ab, in cop, Opandrena ecressonii ¢ 9, ab, 
dubia 4, type, Trachandrena hippotes 4, fq, nuda 9. 


CHARLES ROBERTSON 181 


Other Hymenoptera (5)—Vesp.: Polistes rubiginosus ; Pompil.: 
Cryptocheilus conieus; Tenthredin.: Dolerus bicolor, Nematus 
luteotergum, vertebratus. 

Diptera (26)—Simuli.: Simulium; Syrph.: Brachyopa, Chal- 
comyia, Chrysogaster ontario, Eristalis aeneus ab, dimidiatus ab, 
Melanostoma obscurum, Orthoneura pictipennis ab, Platychirus 
hyperboreus, Psilota, Sphaerophoria, Syritta, Syrphus torvus, 
Tropidia mamillata, Xylota fraudulosa; Empid.: Empis otiosa, 
Rhamphomyia priapulus; Conop.: Myopa vesiculosa; Tachin.: 
Gonia exul; Sarcophag.: Helicobia 4-setosa; Anthomy.: Hyeto- 
dosia; Lonchae.: Lonchaea aberrans, parvicornis; Oscin.: Elachi- 
ptera costata; Sciomyz.: Sciomyza, Tetanocera; Seps.: Prochyliza. 

Coleoptera (3)—Chrysomel.: Galeruca fq, Lina ab; Oedemer.: 
Asclera puncticollis fq. 

On staminate and pistillate flowers: 

Long-tongued Bees (7)—Ap.: Apis se, ab; Ceratin.: Ceratina 
3d, fq; Megachil.: Ceratosmia ¢, ab; Nomad. (¢ 9): Gnathias cune- 
atus ab, ovatus ab, type, Nomada simplex fq, type, Phor integer 
ab, type. 

Short-tongued Bees (23)—Halict.: Agapostemon radiatus 9, 
Chloralictus pilosus 2, fq, sparsus 2, se, ab, versatus 9, fq, zephyrus 
9, ab, Curtisapis forbesii 9, sc, Evylaeus arcuatus 9, foxii 9, se, ab, 
type, Halictus lerouxii 9, fq, Paralictus platyparius ¢ 9, Seladonia 
9, fq; Sphecodini: Sphecodes arvensis 9, fq; Collet.: Colletes in- 
aequalis ¢, fq; Andren. (¢ 9): Andrena erythronii, illinoensis fq, 
type, salicis sc, ab, in cop, type, salictaria se, ab, in cop, type, 
Opandrena miserabilis ab, in cop, Parandrena ab, in cop, Trachand- 
rena claytoniae ab, forbesii fq, mariae se, ab, in cop, type, 
rugosa fq. 

Other Hymenoptera (1)—Tenthredin.: Dolerus arvensis ab. 

Diptera (14)—Syrph.: Brachypalpus frontosus ab, rileyi ab, 
Eristalis flavipes, Helophilus similis, Platychirus quadratus ab, 
Syrphus americanus ab, Xylota fraudulosa ab; Empid.: Rham- 
phomyia gilvipilosa fq, type; Conop.: Myopa pilosa fq; Tachin.: 
Gonia capitata ab; Sarcophag.: Cynomyia ab; Musc.: Pseudo- 
pyrellia ab; Anthomy.: Phorbia platura fq; Scatophag.: Seato- 
phaga ab. 

Coleoptera (1)—Chrysomel.: Orsodachna ab. 

On pistillate flowers: 

Long-tongued Bees (1)—Ceratin.: Zaodontomerus ¢, fq. 

Short-tongued Bees (6, ?)—Halict.: Chloralictus cressonii, 
pruinosus, testaceus type, Oxystoglossa pura; Sphecodini: Dre- 
panium fq; Andren.: Andrena carlini. 


182 FLOWERS AND INSECTS—XXVI 


Other Hymenoptera (1)—Vesp.: Polistes variatus. 

Diptera (11)—Syrph.: Eristalis transversus, Merapioidus; 
Tachin.: Euphorocera cinerea, claripennis, Panzeria, Tachina 
robusta; Sarcophag.: Calliphora erythrocephala; Musc.: Myospila, 
Pollenia; Oscin.: Oscinis coxendix; Seps.: Sepsis. 

Lepidoptera (1)—Nymphal.: Vanessa atalanta. 

Hemiptera (1)—Caps.: Lygus. 


Salix humilis (9:77-8).—Blooms March 18—April 28; 67 vis- 
itors observed, March 21—April 21; Mis, Y. 

On staminate flowers: 

Long-tongued Bees (3)—Nomad.: Gnathias ovatus 9, Nomada 
sayl ¢ °, Xanthidium dentariae ¢. 

Short-tongued Bees (13)—Halict. (9): Chloralictus pilosus, 
pruinosus, sparsus, zephyrus, Evylaeus foxii, Oxystoglossa confusa ; 
Andren.: Andrena illinoensis ¢, mandibularis 9, salicacea 9, type, 
sayi ¢, Trachandrena claytoniae ¢ 9, fq, hippotes 9, mariae J 9, se. 

Other Hymenoptera (1)—Chrysid.: Holochrysis hilaris. 

Diptera (4)—Syrph.: Eristalis aeneus, transversus, Ortho- 
neura nitida; Conop.: Myopa vesiculosa. 

Lepidoptera (1)—Nymphal.: Euvanessa. 

Coleoptera (2)—Coccinell.: Hippodamea parenthesis; Lampyr.: 
Ellychnia. 

Hemiptera (2)—Caps.: Lygus ab; Pentatom.: Euschistus vari- 
olarius. 

On staminate and pistillate flowers: 

Long-tongued Bees (2)—Ap.: Apis_se, ab; Megachil.: Cera- 
tosmia <. 

Short-tongued Bees (12)—Halict. (9): Chloralictus versatus, 
fq, Curtisapis forbesii, Evylaeus arcuatus se, fq, Halictus lerouxii 
ab; Collet.: Colletes inaequalis ¢ 9, ab; Andren.: Andrena earlini 
3 9, ab, erythrogastra J, erythronii ¢ 9, fq, salicis ¢ 9, se, fq, 
Opandrena eressonii 4, fq, miserabilis ¢ 9, fq, Trachandrena for- 
besii ¢ 9, fq. 

Diptera (12)—Syrph.: Brachypalpus frontosus ab, Eristalis 
dimidiatus ab, Helophilus similis ab, Sphaerophoria, Syrphus 
americanus; Tachin.: Gonia capitata ab; Sarcophag.: Cynomyia 
ab; Musc.: Phormia regina, Pseudopyrellia ab; Anthomy.: Phorbia 
platura ab; Scatophag.: Scatophaga ab; Seps.: Sepsis ab. 

Coleoptera (1)—Chrysomel.: Orsodachna ab. 

On pistillate flowers: 

Long-tongued Bees (2)—Bomb.: Bombus impatiens 9; Ceratin.: 
Ceratina “4, fq. 


CHARLES ROBERTSON 183 


Short-tongued Bees (4)—Halict. (2?)—Agapostemon radiatus, 
Seladonia; Sphecodini: Sphecodes arvensis; Andren.: Andrena 
illinoensis ¢. 

Other Hymenoptera (5)—IJchneumon.: Colpognathus, Ichneu- 
mon funestus; 7'enthredin.: Dolerus arvensis ab, bicolor ab, sericeus. 

Diptera (2)—Syrph.: Eristalis latifrons; Anthomy.: Hyeto- 
dosia. 

Hemiptera (1)—Lygae.: Lygaeus. 


Salix longifolia—Blooms April 26—August 11; 119 visitors 
observed on staminate flowers, April 26—July 15; Mis, Y. 

Long-tongued Bees (16)—Ap.: Apis; Bomb.: Bombias auri- 
comus 9, Bombus americanorum 9; Ceratin.: Zaodontomerus <4; 
Megachil.: Megachile mendica ¢; Nomad.: Gnathias cuneatus 9, 
fq, ovatus ¢ 9, ab, Heminomada ¢ 9, fq, Holonomada superba 6, 
Nomada ecressonii ¢ 9, denticulata ¢ 9, fq, illinoensis ¢ 9, fq, sayi 
3 2, fq, Phor g 9, ab, Xanthidium luteoloides ¢; Eucer.: Tetra- 
lonia dilecta 9. 

Short-tongued Bees (43)—Halict.: Agapostemon radiatus 9, 
se, splendens 9, Chloralictus cressonii 9, nymphaearum 9, pilosus 
3 2, sparsus 9, se, fq, tegularis 9, se, versatus 2, se, fq, zephyrus 
3 2, se, fq, Curtisapis forbesii ¢ 9, fq, Evylaeus areuatus 9, se, 
foxii 9, se, fq, pectoralis 2, truncatus ¢ 9, Halictus lerouxii 9, se, 
Odontalictus 9, se, Oxystoglossa confusa ¢ 9, pura Q, similis 9, se, 
Seladonia 9, sec; Sphecodini: Sphecodes arvensis 2, minor 9, Sphe- 
codium cressonii 9; Prosopid.: Prosopis illinoensis 9, fq, pygmaea 
d, ziziae 2; Collet.: Colletes eulophi 4, inaequalis 9, se; Andren.: 
Andrena carlini 2, erythrogastra ¢ 9, sc, ab, illinoensis 9, se, fq, 
macoupinensis 9, mandibularis 9, salictaria 9, sc, sayi 2, Opandrena 
cressonii ¢ 9, se, fq, miserabilis ¢ 9, se, personata ¢', Parandrena 
o 9, se, ab, Trachandrena claytoniae ¢ 9, crataegi ¢, hippotes 9, 
se, ab, mariae ¢ 9, se, fq. 

Other Hymenoptera (10)—Sphec.: Sphex nigricans; Scoli.: 
Elis 5-cincta; Philanth.: Cerceris finitima, Philanthus punctatus 
fq; Vesp.: Polistes pallipes, variatus; Crabron.: Lindenius errans; 
Ozybel.: Notoglossa frontalis, Oxybelus packardii; Jchneumon.: 
Pimpla notanda. 

Diptera (47)—Bibion.: Bibio femoratus, pallipes; Simuli.: 
Simulium; Taban.: Chrysops striatus; Stratiomy.: Nemotelus; 
Syrph.: Allograpta, Baccha aurinota, Chilosia capillata, punctu- 
lata, Chrysochlamys, Chrysogaster nigripes, Eristalis dimidiatus 
fq, Helophilus similis, Melanostoma obscurum, Mesogramma gemi- 
nata fq, marginata, Orthoneura nitida, Paragus bicolor, Pipiza 


184 FLOWERS AND INSECTS—XXVI 


pulchella, Platychirus quadratus, Sphaerophoria fq, Syritta, 
Syrphus americanus; Hmpid.: Empis avida, distans, Parempis, 
Rhamphomyia limbata fq, priapulus fq, Tachydromia; Bombyli.: 
Bombylius major; Conop.: Myopa pilosa, vesiculosa, Zodion fulvi- 
frons; Tachin.: Euphorocera claripennis, Gonia capitata, Linnae- 
myia, Peleteria, Phorantha humeralis; Sarcophag.: Cynomyia fq, 
Helicobia helicis, Sarcophaga cimbicis, sinuata; Musc.: Pseudo- 
pyrellia; Anthomy.: Coenosia ‘antica, Phorbia platura fq; Ortal.: 
Chaetopsis; Scatophag.: Scatophaga. 

Lepidoptera (1)—JZycaen.: Kupsyche. 

Coleoptera (2, fq¢)—Chrysomel.: Diabrotica vittata; Coccinell.: 
Megilla in cop. 


Salix nigra—Blooms April 22—May 29; 97 visitors observed, 
April 22—May 29; Mis, Y. 

On staminate flowers: 

Long-tongued Bees (14)—Ap.: Apis se, fq; Bomb.: Bombias 
separatus 9, Bombus americanorum 9; Ceratin.: Ceratina 
Zaodontomerus ¢; Megachil.: Ceratosmia 2, se; Nomad.: Gnathias 
cuneatus ¢ 9, fq, ovatus ¢ 9, fq, Heminomada ¢ 9, fq, Nomada 
eressonii <i 9, denticulata § 9, illinoensis ¢ 9, fq, sayi ¢ 9, 
Phor Q. 

Short-tongued Bees (43)—Halict. (2) :—Agapostemon radi- 
atus sc, Augochlora viridula, Chloralictus pilosus se, fq, pruinosus 
se, sparsus sc, ab, tegularis sc, versatus sc, ab, zephyrus sc, ab, 
Curtisapis forbesii sc, Evylaeus arcuatus se, foxii se, fq, pectoralis 
sc, 4-maculatus, Halictus lerouxii se, Odontalictus se, Oxystoglossa 
confusa se, fq, similis fq, Paralictus cephalicus, Seladonia se; Sphe- 
codini: Machaeris stygia; Collet.: Colletes inaequalis 9; Andren.: 
Andrena carlini 9, dunningii 9, se, erythrogastra ¢ 9, se, ab, illino- 
ensis 6 9, sc, fq, macoupinensis 9, sc, type, mandibularis Q, sce, 
nigrae 9, se, type, salicis 9, se, salictaria ¢ 9, se, fq, sayi ¢ 2, se, fq, 
Opandrena cressonii ¢ 9, se, ab, dubia <, miserabilis ¢ 9, se, ab, 
personata (¢, Parandrena ¢ 9, se, ab, Trachandrena claytoniae 9, 
se, crataegi ¢' 9, se, ab, forbesii ¢, heraclei 9, sc, hippotes 9, se, 
nuda Q, se, rugosa Q, se. 

Other Hymenoptera (3)—KHumen.: Ancistrocerus  tigris; 
Chrysid.: Holochrysis hilaris; Bracon.: Microdus fq. 

Diptera (32)—Bibion.: Bibio albipennis, pallipes; Syrph.: Allo- 
grapta, Chilosia capillata, punctulata, Chrysogaster nigripes, Eris- 
talis aeneus, dimidiatus, Helophilus similis, Mesogramma marginata, 
Psilota, Sphaerophoria, Syritta, Syrphus americanus, ribesii; 
Empid.: Rhamphomyia limbata, priapulus fq, sordida; Bombyli.: 


i 


CHARLES ROBERTSON 185 


Bombylius major; Conop.: Myopa pilosa fq, vesiculosa fq, Zodion 
fulvifrons; Tachin.: Archytas analis, Gymnosoma, Hypostena 
dunningii, Linnaemyia, Siphona; Sarcophag.: Cynomyia; Muse.: 
Lucilia sylvarum, Pseudopyrellia; Anthomy.: Phorbia platura fq; 
Scatophag.: Scatophaga. 

Lepidoptera (2)—Nymphal.: Vanessa huntera; Papilion.: 
Eurymus. 

Coleoptera (3)—Cerambyc.: Molorchus; Chrysomel.: Diabrotica 
vittata; Lampyr.: Ellychnia. 


SANTALACEAE 


Comandra umbellata (6: 50-1).—Blooms April 18—June 6; 44 
visitors observed, May 1-23; Pol, W. 

Long-tongued Bees (4)—Ap.: Apis; Megachil.: Osmia pumila 
2; Nomad.: Holonomada superba ¢ 2; Eucer.: Tetralonia dilecta 7. 

Short-tongued Bees (8, 9)—Halict.: Chloralictus albipennis, 
tegularis, versatus, Halictus lerouxii, Sphecodini: Sphecodes arven- 
sis; Andren.: Andrena sayi, Opandrena miserabilis, Trachandrena 
mariae. 

Diptera (28)—Stratiomy.: Odontomyia pubescens, Stratiomyia 
quaternaria; Syrph.: Eristalis dimidiatus, Helophilus latifrons, 
Sphaerophoria ab, Syritta, Tropidia mamillata, Volucella vesi- 
eulosa; Tachin.: Gonia capitata, Peleteria, Tachina robusta; 
Sarcophag: Boettcheria, Calliphora erythrocephala fq, vomitoria, 
Cynomyia ab, Sarecophaga cimbicis ab, sinuata; Musc.: Grapho- 
myia, Lucilia caesar ab, sericata fq, sylvarum ab, Myospila, Phormia 
regina fq, Pseudopyrellia; Anthomy.: Coenosia antica, Limnophora 
ab, Phorbia platura ab; Sciomyz.: Sciomyza. 

Lepidoptera (2)—Lycaen.: Uranotes; Papilion.: Iphiclides. 

Coleoptera (2)—Coccinell.: Megilla; Lampyr.: Telephorus 
bilineatus. 


SAPINDACEAE 


Aesculus glabra (16: 160).—Blooms April 7—-May 18; 9 visitors 
observed, April 21—May 11; Ma, Y. 

Long-tongued Bees (9)—Bomb. (9): Bombias auricomus fq, 
separatus, Bombus americanorum fq, impatiens; Megachil.: Cen- 
trosmia ¢ 9, se, fq, Osmia cordata ¢; Eucer.: Tetralonia belfragei 
do 2, se, fq, in cop, dilecta 2; Anthophor.: Anthophora Q, se. 


Aesculus hippocastanum (cult, 16: 159)—Eight visitors ob- 
served, May 29; Ma, W. 
Birds (1)—Trochil.: Trochilus. 


186 FLOWERS AND INSECTS—XXVI 


Long-tongued Bees (7)—Bomb. (2): Bombias auricomus ab, 
scutellaris, separatus ab, Bombus americanorum ab, impatiens ab; 
Eucer.: Tetralonia dilecta J 9, ab; Anthophor.: Anthemoessa <j. 


SAXIFRAGACEAE 
Heuchera hispida (5: 178—-9).—Blooms May 4—July 4; 6 visitors 
observed, May 8—June 23; Mi, Y. 
Long-tongued Bees (1)—Bomb.: Bombus americanorum Q. 
Short-tongued Bees (5)—Halict. (2): Chloralictus pruinosus, 
versatus se, fq, Oxystoglossa confusa se, similis se, fq; Collet.: 
Colletes aestivalis ¢ 9, se, ab, oligolege. 


Hydrangea arborescens (5: 269-70).—Blooms June 21—August 
2; 34 visitors observed, June 27, 30; Mis, W. 

Long-tongued Bees (4)—-Bomb.: Bombias separatus 9, ¢, ab, 
Bombus americanorum Q, ¢; Ceratin.: Ceratina , se; Megachil.: 
Neotrypetes truncatus 9, ¢ 

Short-tongued Bees (8)—Halict.: Chloralictus sparsus 9, se, 
ab, versatus 9, sec, ab, Evylaeus arcuatus 9, se, pectoralis J 9, se, 
truncatus 9, sc, Oxystoglossa pura 9, sc, Seladonia 9, ec; Prosopid.: 
Prosopis ziziae ¢ 9, sf, ab. 

Other Hymenoptera (1)—Crabron.: Solenius. 

Diptera (14)—Syrph. (sf): Allograpta, Eristalis tenax, Meso- 
gramma geminata, Paragus tibialis, Sphaerophoria, Syritta, Syr- 
phus americanus; Hmpid.: Parempis ab; Conop.: Oncomyia fq, 
Stylogaster biannulata; Tachin.: Archytas analis; Musc.: Grapho- 
myia, Musca, Pseudopyrellia. t 

Lepidoptera (2)—Hesperi.: Epargyreus; Pyromorph.: Har- 
risina. 

Coleoptera (5)—Cerambyc.: Euderees sf, Typocerus velutinus ; 
Mordell.: Mordella marginata ab, Mordellistena ornata, pubes- 
cens ab. 


Philadelphus grandiflorus (cult, 5:270).—Twenty-one species 
and 160 individuals; May 29-June 26; Mi, W. 

Long-tongued Bees (2:67)—Bomb.: Bombus americanorum 
9, 1; Megachil.: Prochelostoma philadelphi ¢ 9, se, in cop, 66, type. 

Short-tongued Bees (8:58, 9)—Halict.: Chloralictus sparsus 
sc, 32, versatus se, 5, zephyrus 1; Prosopid.: Prosopis ziziae 2; 
Andren.: Opandrena cressonii se, 1, personata 4, Trachandrena 
claytoniae se, 9, crataegi se, 4. 

Other Hymenoptera (2:4)—Humen.: Ancistrocerus tigris 1, 
Leionotus foraminatus 3. 


CHARLES ROBERTSON 187 


Diptera (8: 27)—Bibion.: Dilophus obesulus 2; Muse.: Lucilia 
caesar 1, sericata 1, Pollenia 2, Pseudopyrellia 2; Anthomy.: Limno- 
phora 1, Phorbia acra 17, platura 1. 

Lepidoptera (2:4)—Papilion.: Jasoniades 1; Hesperi.: Epar- 
gyreus 3. 


Ribes gracile (5:270-1).—Blooms March 30—May 16; 38 vis- 
itors observed, April 4-29; Ma, W. 

Long-tongued Bees (18)—Ap.: Apis sc, ab, n; Bomb. (Q): 
Bombias auricomus ab, separatus, Bombus americanorum ab, con- 
similis, impatiens ab, ridingsii; Megachil. (¢, n): Ceratosmia, 
Osmia pumila; Nomad. (n) ; Gnathias cuneatus 4, ovatus ¢, Nomada 
denticulata ¢, illinoensis g', sayi ¢ 9, Xanthidium luteoloides ¢, 
luteolum ¢ 9, fq; Hucer.: Tetralonia dilecta ¢, ab; Anthophor.: 
Anthophora ¢. 

Short-tongued Bees (17, n)—Halict. (2): Agapostemon radia- 
tus, Augochlora viridula, Chloralictus caeruleus, cressonii, sparsus 
se, zephyrus, Curtisapis coriacea, Evylaeus foxii sf, ab, Halictus 
lerouxii sf, Oxystoglossa confusa; Collet.: Colletes aestivalis ¢ 9; 
Andren.: Andrena carlini 9, dunningii ¢, pruni ¢ 2, fq, in cop, 
sayi ¢ 9, ab, Trachandrena claytoniae 4, rugosa ¢. 

Diptera (1)—Bombyli.: Bombylius major n. 

Lepidoptera (2)—Lycaen.: Cyaniris n; Papilion.: Iphielides. 


SCROPHULARIACEAE 
Castilleja coccinea (13:598).—Blooms April 27-June 10; 1 
visitor observed, May 5, 19; Ma (O), R. 
Birds (1)—Trochil.: Trochilus. 


Collinsia verna (13:588-90).—Blooms April 21-June 1; 26 
visitors observed, April 21—May 8; Ma, R. 

Long-tongued Bees (18)—Ap.: Apis se, ab; Bomb. (2): Bom- 
bias auricomus, scutellaris, separatus, Bombus americanorum, im- 
patiens, ridingsii; Ceratin.: Ceratina ¢ 9, fq, Zaodontomerus dj; 
Megachil. (¢ 9, se): Ceratosmia ab, Diceratosmia ab, Osmia atri- 
ventris ab, collinsiae fq, type, pumila ab; Nomad.: Nomada sayi 9; 
Eucer.: Tetralonia belfragei ¢ 9, fq, dilecta ¢; Anthophor.: Antho- 
phora ¢ 9. 

Short-tongued Bees (1)—Halict.: Halictus lerouxii 9, e. 

Diptera (3)—Empid.: Empis nuda, otiosa; Bombyli.: Bomby- 
lius major. 

Lepidoptera (4, n)—Papilion.: Eurymus; Hespert.: Thanaos 
brizo, icelus, persius. 


188 FLOWERS AND INSECTS—XXVI 


Gerardia auriculata (13:597)—Blooms August 26—-September 
28; 7 visitors observed, August 30-September 12; Ma, R. 

Long-tongued Bees (6)—Ap.: Apis; Bomb. (¢): Bombias 
auricomus, Bombus americanorum sc, ab, impatiens sc; Hucer.: 
Melissodes boltoniae 9, ¢; Megachil.: Megachile brevis 9, se. 

Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, 
esp. 


Gerardia grandiflora (13: 594-5).—Blooms July 29-September 
20; 11 visitors observed, August 8-September 14; Ma, Y. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (7)—Bomb.: Bombias auricomus §%, ¢, sep- 
aratus 9, c, Bombus americanorum ¢ 2 G, se, ab, consimilis 9, 
impatiens 9, sc; Megachil.: Megachile mendica 9, ¢; Eucer.: 
Melissodes bimaculata ¢ 9, se. 

Short-tongued Bees (2, 9, n): Halict.: Chloralictus versatus 
esp, Curtisapis forbesii 9, e. 

Diptera (1)—Syrph.: Pipiza nigribarba f, n. 


Gerardia purpurea (13: 595-6).—Blooms August 30-Septem- 
ber 29; 5 visitors observed, September 4-26; Ma, R. 

Long-tongued Bees (5, se)—Bomb.: Bombus americanorum 
2 8, ab, impatiens 8; Megachil.: Megachile brevis 9; Eucer.: 
Melissodes boltoniae ?, nivea 9. 


- Gerardia tenuifolia (13:596-7).—Blooms August 19—October 
16; 17 visitors observed, August 26-September 23; Ma, R. 

Long-tongued Bees (10)—Ap.: Apis se, ab; Bomb. (se): Bom- 
bias scutellaris %, separatus ¢, Bombus americanorum @ 9, ab, 
impatiens 8, ab; Ceratin.: Ceratina 2; Eucer.: Melissodes boltoniae 
2, ¢; Megachil. (2): Megachile brevis se and cutting petals, fq, 
mendica c, Xanthosarus ¢. 

Short-tongued Bees (3)—Halict.: Chloralictus versatus 9, esp, 
n, Oxystoglossa confusa 4, n; Panurg.: Calliopsis andreniformis 
3 , se, ab, in cop. 

Diptera (1)—Syrph.: Syrphus americanus fsp, n. 

Lepidoptera (2, n)—Papilion.: Eurymus, Pieris. 

Coleoptera (1)—WMelo.: Pyrota mylabrina gn, n. 

Gratiola virginiana (13: 592).—Blooms May 11-July 17; 1 vis- 
itor observed, June 2; Mi, W. 

Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, se, ab. 


Ilysanthes dubia.—Blooms June 19-—September 1; 10 species 
and 18 individuals observed, July 31, August 3, 5, 6; Mi, W. 


CHARLES ROBERTSON 189 


Short-tongued Bees (5: 12)—Halict.: Chloralictus obscurus 9, 
1, pilosus ¢ 2, 2, sparsus 2, se, 1, versatus 9, se, 7; Panurg.: Calliop- 
sis andreniformis 9, 1. 

Lepidoptera (5:6)—Lycaen.: Everes 1; Papilion.: Eurema 2, 
Eurymus 1; Hesperi.: Ancyloxypha 1, Pholisora hayhurstii 1. 


Linaria vulgaris (int, 13: 585).—Blooms May 1—October 24; 12 
visitors observed, June 25—October 10; Ma, Y. 

Long-tongued Bees (6)—Ap.: Apis se, n; Bomb.: Bombus 
americanorum ¢ 2 9%, se, ab, consimilis %, impatiens 9, sc; Me- 
gachil.: Aleidamea simplex 9, se, n, Megachile brevis 9, ¢, n. 

Short-tongued Bees (1)—Halict.: Agapostemon viridulus Q, n. 

Lepidoptera (5, n)—Nymphal.: Vanessa cardui; Papilion.: 
Eurymus, Pieris; Hesperi.: Limochores taumas, Thanaos juvenalis. 


Mimulus alatus (8: 148).—Blooms July 13-September 5; 1 vis- 
itor observed, August 3; Ma, R. 
Long-tongued Bees (1)—Bomb.: Bombus americanorum 9. 


Mimulus ringens (8: 147-8).—Blooms July 11-September 7; 
2 visitors observed, August 1, 13; Ma, R. 

Long-tongued Bees (2)—Bomb.: Bombus americanorum 9° 9, 
consimilis 9. 


Pentstemon hirsutus (13: 591-2).—Blooms May 1—June 7; 27 
visitors observed, May 1—June 3; Ma, W. 

Long-tongued Bees (21)—Bomb. (2): Bombias auricomus fa, 
separatus, Bombus americanorum fq, consimilis, impatiens; 
Ceratin.: Ceratina 9; Megachil.: Alcidamea simplex ¢ 9, se, faq, 
Centrosmia 9, se, Ceratosmia 92, Osmia atriventris ¢ 9, se, fq, col- 
linsiae 2, cordata ¢ 9, se, fq, distincta 9, se, fq, pumila 9, se, fq; 
Nomad.: Holonomada affabilis 2; Melect.: Bombomelecta 92; ELucer. 
(fq); Tetralonia belfragei ¢ 9, se, dilecta ¢ 9, in cop, rosea J; 
Anthophor.: Anthemoessa ¢, ab, Anthophora ¢ 9, se, fq. 

Other Hymenoptera (1)—Eumen.: Leionotus foraminatus, per- 
forating. 

Diptera (1)—Bombyli.: Bombylius atriceps. 

Lepidoptera (4, n)—Papilion.: Heraclides, Laertias, Papilio; 
Hesperi.: Atrytone zabulon. 


Pentstemon laevigatus (13: 590-1).—Blooms May 18—July 9; 
30 visitors observed, May 28—June 26; Ma, W. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (17)—Ap.: Apis; Bomb.: Bombias auri- 
comus 9, Bombus americanorum 2 %, consimilis 2, impatiens 9; 


190 FLOWERS AND INSECTS—XXVI 


Ceratin.: Ceratina 9, c, n; Megachil.: Osmiini: Alcidamea simplex 
3 , sc, ab, Monilosmia 2, Osmia distincta 92, sec, fq, pumila 9; 
Megachilini: Cyphopyga 6 9, Megachile brevis 2; Hucer. (Jf 9, fq) : 
Tetralonia dilecta, rosae; Anthophor. (sc): Anthemoessa ¢ 9, 
fq, Anthophora 9, fq, Clisodon 9. 

Short-tongued Bees (5)—Halict. (9, ¢, n) : Agapostemon viridu- 
lus, Chloralictus pilosus, pruinosus, versatus, Curtisapis coriacea. 

Other Hymenoptera (2, n)—KHumen.: Leionotus foraminatus, 
perforating, anormis, at holes. 

Diptera (1)—Syrph.: Mesogramma marginata fsp, n. 

Lepidoptera (3, n)—Papilion.: Euphoeades, Eurymus; Sphing.: 
Deilephila. 

Coleoptera (1)—Scarabae.: Trichius piger f, n. 


Scrophularia marilandica (13: 586-8).—Blooms July 8—Octo- 
ber 26; 39 visitors observed, July 12-September 19; Mi, R. 

Birds (1)—Trochil.: Trochilus fq. 

Long-tongued Bees (7)—Ap.: Apis ab; Bomb.: Bombus con- 
similis ¢ Y, ab, impatiens , sc, ab; Ceratin.: Ceratina 2; Megachil.: 
Anthemois <4, Cyphopyga ¢; EHucer.: Melissodes bimaculata 
3 &, fq. 

Short-tongued Bees (9)—Halict.: Agapostemon viridulus 2, 
Augochlora viridula ¢, Chloralictus sparsus ¢' 2, fq, versatus J Q, 
se, ab, zephyrus ¢ 2, ab, Curtisapis coriacea ¢ 2, sc, Halictus le- 
rouxil 2, sc, Oxystoglossa confusa 7 9, se, fq, Seladonia ¢ 2 se. 

Other Hymenoptera (17)—Sphec.: Sphex vulgaris; Philanth.: 
Philanthus punctatus; Vesp.: Polistes annularis, pallipes, rubigi- 
nosus, variatus,, Vespula cuneata, germanica ab, maculata ab; 
Eumen.: Ancistrocerus campestris, Eumenes fraternus fq, Leionotus 
anormis, foraminatus, scrophulariae, ziziae, Monobia, Zethus. 

Diptera (8)—Syrph. (f, n): Mesogramma marginata, polita; 
Tachin.: Siphona. 

Lepidoptera (2)—Lycaen.: Everes; Ctenuch.: Scepsis. 

August 6, 14, the following 8 species and 26 individuals were 
taken on the flowers :— 

Short-tongued Bees (3: 21)—Halict.: Chloralictus sparsus 5, 
versatus 7, zephyrus 9. 

Other Hymenoptera (4:4)—Vesp.: Polistes annularis 1, pal- 
lipes 1, variatus 1, Vespula maculata 1. 

Diptera (1)—Tachin.: Siphona 1. 


Seymeria macrophylla (13:593-4).—Blooms July 13-August 
22; 9 visitors observed, July 28—-August 8; Ma, Y. 


CHARLES ROBERTSON 191 


Long-tongued Bees (6)—Ap.: Apis; Bomb. (%) : Bombus amer- 
icanorum sc, ab, consimilis sc, ab, impatiens, ridingsii sc; Eucer.: 
Melissodes bimaculata ¢. 

Diptera (1)—Syrph.: Milesia f, n. 

Lepidoptera (2, n)—Papilion.: Pieris; Hesperi.: Atrytone 
zabulon fq. 


Verbascum thapsus (int, 13: 583-4).—Blooms June 4-October 
26; 16 visitors observed, June 27—August 15; Ma, Y. 

Long-tongued Bees (3)—Ap.: Apis ¢; Bomb. (9): Bombus 
americanorum ¢, consimilis se. 

Short-tongued Bees (6)—Halict. (9, c) : Agapostemon viridulus, 
Augochlora viridula, Chloralictus cressonii, versatus, Curtisapis 
coriacea, Evylaeus pectoralis. 

Diptera (7, f, n)—Syrph.: Allograpta, Mesogramma geminata, 
marginata, Pipiza nigribarba, Syritta, Syrphus americanus; 
Anthomy.: Phorbia platura. 


Veronica arvensis (int).—Blooms April 12—June 12; 3 visitors 
observed, May 3, 19; Mi, R. 

Short-tongued Bees (2)—Halict. (2): Chloralictus versatus 3, 
Oxystoglossa similis 1. 

Diptera (1)—Syrph.: Mesogramma marginata 4. 


Veronica peregrina.—Blooms April 9-June 20; 13 visitors ob- 
served, May 3-8; Mi, W. 

Short-tongued Bees (8, 9)—Halict.: Chloralictus pilosus, pru- 
inosus, sparsus, versatus fq, zephyrus, Oxystoglossa similis fq, 
Seladonia fq ; Andren.: Opandrena cressonii. 

Diptera (4)—Syrph.: Mesogramma marginata, Sphaerophoria ; 
Anthomy.: Phorbia acra; Oscin.: Oscinis soror. 

Hemiptera (1)—Corimelaen.: Corimelaena pulicaria. 


Veronica virginica (13: 592-3).—Blooms June 20—August 27; 
42 visitors observed, July 7—August 11; Mis, W. 

Long-tongued Bees (9)—Ap.: Apis ab; Bomb, (9): Bombus 
americanorum, consimilis; Ceratin.: Ceratina 9, se; Megachil.: 
Trypetini: Neotrypetes truncatus 9, ¢; Osmiini: Aleidamea sim- 
plex 9, Hoplitis 9, se; Coelioxyini: Coelioxys 8-dentata ¢, fq; 
Eucer.: Melissodes bimaculata ¢ 9, fq. 

Short-tongued Bees (13)—Halict.: Agapostemon texanus a» 
viridulus ¢ 9, Augochlora fervida 9, Chloralictus pilosus ¢, sparsus 
9, ¢, versatus 9, se, fq, Curtisapis coriacea 2, ¢, Odontalictus 9, 
Seladonia J 9; Prosopid.: Prosopis pygmaea 9, ziziae 9. 


192 FLOWERS AND INSECTS—XXVI 


Other Hymenoptera (4)—Sphec.: Ammobia ichneumonea, 
Sphex nigricans, procera; Bembic.: Stictia. 

Diptera (8)—Syrph.: Eristalis aeneus sf, tenax sf, transversus 
f, n, Mesogramma marginata f, n, Syritta; Bombyli.: Exoprosopa 
fasciata; Conop.: Oneomyia; Tachin.: Archytas analis. 

Lepidoptera (7)—Nymphal.: Vanessa huntera; Lycaen.: Chry- 
sophanus, Everes; Papilion.: Pieris; Ctenuch.: Secepsis; Pyraust.: 
Loxostege, Nomophila. 

Hemiptera (1)—Lygae.: Lygaeus. 


SOLANACEAE 


Datura stramonium (int).—Blooms June 4-October 26; 2 vis- 
itors observed, June 25, 27; Ma, W. 
Lepidoptera (2)—Sphing.: Philampelus, Protoparce. 


Datura tatula (int, 13: 582).—Blooms May 26—October 28; 10 
visitors observed, July 13-October 28; Ma, W. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (1)—Ap.: Apis ¢, ab, n. 

Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, ¢, n. 

Diptera (4, f, n)—Syrph.: Allograpta, Mesogramma marginata, 
Rhingia, Syrphus ribesii. 

Lepidoptera (2)—Sphing.: Deilephila, Protoparce. 

Coleoptera (1)—Chrysomel.: Diabrotica 12—puctata f, n. 


Physalis lanceolata (8: 146).—Blooms May 12-October 3; 5 
visitors observed, May 12-September 29; Mi, Y. 

Long-tongued Bees (1)—Anthophor. Anthophora 9. 

Short-tongued Bees (4)—Halict.: Chloralictus versatus 9, ¢; 
-Collet.: Colletes latitarsis ¢ 9, se, ab; willistonii, ¢ 9, se, fq, type; 
Panurg.: Zaperdita ¢ 9, se, ab. 


Physalis subglabrata (8: 146-7).—Blooms July 12-September 
27; 1 visitor observed, July 27; Mi, Y. 
Short-tongued Bees (1)—Collet.: Colletes latitarsis 9, se. 


Physalis virginiana (8:146).—Blooms June 7—October 4; 5 
visitors observed, June 19—August 1; Mi, Y. 

Short-tongued Bees (5)—Halict. (, se): Evylaeus pectinatus, 
Oxystoglossa confusa; Collet.: Colletes latitarsis ¢' 2, se, ab, type, 
willistonii 2, se; Panurg.: Zaperdita ¢ Q, se. 

Solanum carolinense (13: 582).—Blooms June 4—October 7; 3 
visitors observed, June 25—August 29; Ma, W. 

Long-tongued Bees (3, 9, ¢)—Bomb.: Bombias scutellaris, Bom- 
bus americanorum, impatiens. 


CHARLES ROBERTSON 193 


Solanum nigrum (13: 582).—Blooms June 6—October 20; 2 vis- 
itors observed, August 29, September 3; Ma, W. 

Long-tongued Bees (2, $, ¢)—Bomb.: Bombus americanorum, 
impatiens. 


Solanum rostratum (int).—Blooms July 9—October 4; 1 visitor 
observed, July 23; Ma, Y. 
Long-tongued Bees (1)—Bomb.: Bombus americanorum ¥, e. 


STAPHYLEACEAE 

Staphylea trifolia (14: 302-3).—Blooms April 23~May 12; 21 
visitors observed, April 23—May 11; Mi, W. 

Long-tongued Bees (4)—Ap.: Apis se, ab; Bomb. (9, ab): 
Bombus americanorum, consimilis, impatiens. 

Short-tongue Bees (9)—Halict. (9): Curtisapis coriacea, 
Evylaeus 4—maculatus, Seladonia; Collet.: Colletes inaequalis ¢; 
Andren.: Andrena mandibularis 9, pruni 9, sc, sayi ¢ 9, fq, in cop, 
type, Opandrena miserabilis 9, Trachandrena nuda 9, type. 

Other Hymenoptera (1)—Vesp.: Vespula maculata. 

Diptera (4)—Syrph.: Eristalis flavipes f; Empid.: Empis otiosa 
ab, Pachymeria; Bombyli.: Bombylius major. 

Lepidoptera (1)—Hesperi.: Thanaos juvenalis. 

Coleoptera (2)—Cerambyc.: Molorchus; Scarabae.: Euphoria 
sepulchralis. 

Hemiptera (1)—Caps.: Lygus. 


THYMELAEACEAE 

Dirca palustris (9: 73-4).—Blooms March 18—April 30; 11 vis- 
itors observed, March 21; Mi, Y. 

Long-tongued Bees (4, ¢')—Ceratin.: Ceratina, Zaodontomerus ; 
Megachil.: Ceratosmia; Nomad.: Gnathias cuneatus. 

Short-tongued Bees (6)—Halict. (2): Chloralictus smilacinae, 
versatus, zephyrus, Oxystoglossa pura; Collet.: Colletes inaequalis 
o; Andren.: Trachandrena rugosa ¢. 

Lepidoptera (1)—Nymphal.: Euvanessa. 


TILIACEAE 

Tilia americana.—Blooms June 4—July 12; 29 species and 130 
individuals observed, July 2, 6, 7; Mi, Y. 

Long-tongued Bees (2:37)—Ap.: Apis 36; Bomb.: Bombus 
americanorum 9, 1. 

Short-tongued Bees (11: 61)—Halict.: Augochlora viridula ¢ 
9, 8, Chloralictus illinoensis 9, 1, sparsus ¢ 2, se, 22, versatus 9, 4, 
zephyrus 9, se, 12, Curtisapis coriacea 9, se, 1, forbesii 2, 2, Evylaeus 


194 FLOWERS AND INSECTS—XXVI 


pectoralis ¢' 9, 2, Halictus lerouxii 9, 1, Oxystoglossa confusa 9, 1. 

Other Hymenoptera (3:3)—Sphec.: Ammobia ichneumonea 1; 
Scoli.: Elis 5-cineta 1; Humen.: Leionotus foraminatus 1. 

Diptera (11: 27)—Syrph.: Allograpta 2, Orthoneura nitida 1, 
Syrphus americanus 2; Zachin.: Archytas aterrima 1, Peleteria 1; 
Sarcophag.: Calliphora erythrocephala 1; Musc.: Graphomyia 1, 
Lucilia caesar 4, Phormia regina 1, Pseudopyrellia 11; Anthomy.: 
Phorbia acra 2. 

Lepidoptera (1: 1)—Ctenuch.: Scepsis 1. 

Coleoptera (1: 1)—Malach.: Anthocomus 1. 


UMBELLIFERAE 

Anethum graveolens (Mis, Y: cult).—July 12-16, 1920, 1000 
individuals taken on the flowers showed: 

Long-tongued Bees (2)—Ap. 1, Megachil. 1. 

Short-tongued Bees (635)—Halict. f 9, mostly 2 se., 585, Pro- 
sopid. S 9, 50. 

Other Hymenoptera (48)—Oxybel. 19, Cercer. 12, Scoli. 4, 
Bracon. 3, Larr. 2, Eumen. 1, Nysson. 1, Sphec. 1. 

Diptera (292)—Syrph. 246, Musc. 27, Sarcophag. 7, Anthomy. 
4, Tachin. 4, Oscin. 2, Mycetophil. 1, Seps. 1. 

Hemiptera (25)—Caps. 

Coleoptera (3)—Fam.? 1, Mordell. 2. 


Chaerophyllum procumbens (12: 459-60).—Blooms April 6-— 
May 26; 49 visitors observed, April 16—-May 4; Pol, W. 

Long-tongued Bees (4)—Megachil.: Ceratosmia 2, Osmia pumila 
2, Nomad.: Heminomada 0, Nomada sayi ¢ type. 

Short-tongued Bees (12)—Halict. (2): Chloralictus cressonii, 
obscurus, sparsus, versatus, Evylaeus 4~maculatus type; Halictus 
lerouxii fq, Oxystoglossa confusa, pura; Sphecondini: Proteraner 
36; Andren.: Andrena carlini 2, nasonii 9, sc, Opandrena ziziae ¢. 

Other Hymenoptera (4)—Chalcid.: Chrysocharis oscinidis; 
Ichneumon.: Gambrus albonotatus, apicatus, Pimpla marginata. 

Diptera (23)—Simuls.: Simulium; Syrph.: Chilosia petulea, 
Mesogramma geminata in cop, marginata, Orthoneura nitida, 
Paragus bicolor, tibials, Pipiza femoralis, nigribarba, Psilota, 
Sphaerophoria, Syrphus americanus, torvus, ribesii; Phor.: Tri- 
neura; Sarcophag.: Helicobia helicis; Musc.: Myospila, Pseudo- 
pyrellia; Anthomy.: Phorbia acra; Seps.: Sepsis; Oscin.: Elachip- 
tera costata, Hippelates flavipes, Ossinis soror. 

Coleoptera (4)—Chrysomel.: Diabrotica vittata, Glyptina, 
Mantura; Anthic.: Corphyra terminalis. 


—_— = 


CHARLES ROBERTSON 195 


Hemiptera (2)—Corimelaen.: Corimelaena pulicaria, lateralis. 


Cicuta maculata (12:459-60).—Blooms June 27-September 
16; 283 visitors observed, July 8-September 8; Pol, W. 
Long-tongued Bees (7)—Megachil.: Megachile brevis 4, petu- 
lans ¢, Sayapis pugnata 2; Bomb.: Bombias auricomus ¢, Bombus 
impatiens $; Ap.: Apis; Zucer.: Melissodes bimaculata 2. 
Short-tongued Bees (22)—-Prosopid.: Prosopis illinoensis ¢ 9, 
pygmaea ¢ 9, saniculae 9, sayi ¢ 9, ziziae 9; Collet. (4): Colletes 
armatus, eulophi, latitarsis; Halict.: Agapostemon radiatus ¢ 9, 
viridulus ¢, Augochlora fervida 9, viridula 9, Chloralictus sparsus 
2, se, versatus fi 2, sc, Halictus lerouxii ¢ 9, se, fq, parallelus ¢ 9, 
se, Odontalictus 2, se, Oxystoglossa confusa 9, se, pura 9, Seladonia 
o 2; Sphecodini (¢ 2): Machaeris stygia, Sphecodes arvensis fq. 
Other Hymenoptera (147)—Crabron.: Anacrabro fq, Clyto- 
chrysus, Ectemnius, Hypocrabro, Lindenius errans fq, Protothy- 
reopus rufifemur, Pseudocrabro fq, Solenius, Xestocrabro 6-macu- 
latus, texanus, trifasciatus; Ozybel.: Notoglossa americana fq, 
cressonii type, emarginata, frontalis fq, inornata type, Oxybelus 
laetus, niger, packardii fq, 4-notatus fq; Tryporyl.: Trypoxylon 
tridentatum ; Philanth.: Cerceris bicornuta, clypeata, compacta fq, 
finitima, fumipennis, kennicottii, Eucerceris, Philanthus punctatus; 
Pemphredon.: Psen; Sphec.: Ammobia ichneumonea, pennsylvanica, 
Chalybion, Chlorion fq, Isodontia apicalis, macrocephala, Priononyx 
atrata, thomae, Sceliphron ab, Sphex gracilis, nigricans, vulgaris; 
Larr.: Astatus bicolor, unicolor fq, Larra, Larropsis, Lyroda fq, 
Notogonidea fq, Tachysphex acutus, belfragei fq, tarsatus, ter- 
minatus, Tachytes aurulentus fq, elongatus fq, mandibularis, ob- 
seurus, pepticus, sericatus; Bembic.: Bicyrtes 4-fasciata, Bembix 
spinolae, Megastizus fq, in cop, Sphecius fq, Stizus; Nysson.: Hop- 
lisus atricornis, simillimus, Nysson plagiatus, Zanysson aurinotus, 
Pseudoplisus phaleratus fq; Pompil.: Ageniella longula, Anoplius 
illinoensis, Arachnoproctonus, Batizonus, Ceropales bipunctata, 
elegans, fraterna, fulvipes, robinsonii, Cryptocheilus fulgifrons, 
Epysiron, Lophopompilus atrox, philadelphicus fq, Poecilopompilus 
interruptus, navus fq, Pompiloides americanus, Priocnemoides 
fulvicornis fq, terminatus, unifasciatus, Psammochares relativus 
fq, tenebrosus, Sophropompilus; Vesp.: Polistes annularis, pallipes, 
variatus fq, rubiginosus, Vespula cuneata, germanica, maculata, 
vidua ; Eumen.: Ancistrocerus campestris, tigris, Eumenes fraternus, 
Leionotus anormis, arvensis, dorsalis fq, foraminatus fq, 4-sectus 
fq, serophulariae, Monobia; Scoli.: Elis interrupta fq, obseura, 5- 
cincta ab, thoracica, Scolia bicincta fq, nobilitata; Tiphi.: Tiphia 


196 FLOWERS AND INSECTS—XXVI 


illinoensis type, transversa; Mutill. (¢'): Pseudomethoca, Sphae- 
rophthalma, Mutilla hexagona, sayi; Formic.: Formica fusca '; 
Chrysid.: Gonochrysis, Hedychridium, Hedychrum wiltii, Holopyga 
fq, Monochrysis, Notozus, Tetrachrysis caerulans, montana, venusta; 
Figit.: Eucoilidia canadensis, Figites 5-lineata, Psilodora erythro- 
pus, impatiens; Chalcid.: Chalcis, Bruchophagus, Leucospis, Peri- 
lampus triangularis, cyaneus; Hvani.: Foenus tarsatorius; Ichneu- 
mon.: Ichneumon jucundus; Bracon.: Bassus, Agathis vulgaris, 
Orgilus, Bracon vernoniae, Microgaster, Iphiaulax. 

Diptera (83)—Mycetophil.: Eugnoriste, Sciara atrata; Bibion.: 
Seatopse pulicaria; Taban.: Chrysops striatus, Tabanus; Strati- 
omy.: Nemotelus, Stratiomyia meigenii, unilimbata; Mida.: Midas 
clavatus, tibialis; Bombyl.: Exoprosopa fascipennis; Scenopi.: 
Scenopinus; Syrph.: Allograpta, EHristalis aeneus, flavipes, lati- 
frons, tenax, Mallota illinoensis, Mesogramma geminata, marginata, 
polita, Orthoneura nitida in cop, Paragus bicolor fq, tibialis, Pipiza 
pulehella, Platychirus quadratus, Sphaerophoria fq, Syritta ab, 
Tropidia quadrata; Conop.: Conops brachyrrhynchus, xantho- 
pareus, Oncomyia, Zodion nanellum; Tachin.: Alophora aeneoven- 
tris, Archytas analis, aterrima, hystrix, Paradidyma, Trichophora, 
Ennyomma clistoides, Clytiomyia, Exorista confinis, pyste, Cisto- 
easter occidua fq, pallasii, Gymnosoma, Belvosia bifasciata, uni- 
fasciata, Linnaemyia fq, Opsidia, Pachyophthalmus signatus (auri- 
frons fq, type), Phasioclista, Phorantha pruinosa, purpurascens 
fq, type, Euphorocera claripennis fq, Senotainia rubriventris fq, 
trilineata fq, Spallanzania, Sturmia nigrita, Tachina rustica, Tri- 
chopoda lanipes, pennipes, Winthemia; Sarcophag.: Helicobia heli- 
cis, Sarcophaga assidua, cimbicis, hunteri, sinuata; Musc.: Compso- 
myia fq, Graphomyia, Morellia, Musca fq, Phormia regina, Pseudo- 
pyrellia ab, Stomoxys; Anthomy.: Calythea, Limnophora, Phorbia 
acra, Hylemyia laevis; Trypet.: Huaresta aequalis; Seps.: Sepsis; 
Oscin.: Hippelates plebejus; Agromyz.: Agromyza latipes. 

Lepidoptera (8)—Nymphal.: Argynnis, Basilarchia archippus, 
Hypatus, Phyciodes; Lycaen.: Everes; Papilion.: Eurymus, Iphi- 
clides ; Ctenuch.: Scepsis. 

Coleoptera (14)—Coccinell.: Coccinella 9-notata, Scymnus 
consobrinus ; Cerambyc.: Batyle, Euderces; Chrysomel.: Diabrotica 
atripennis, 12-punctata; Bruch.: Bruchus bivulneratus; Mordell.: 
Mordella marginata, melaena, scutellaris; Melo.: Epicauta trichrus; 
Rhipiphor.: Myodites; Curculion.: Centrinus picumnus, scutellum- 
album. 

Hemiptera (2)—Corimelaen.: Corimelaena pulicaria; Phymat.: 
Phymata, pred. 


: 


CHARLES ROBERTSON 197 


Cryptotaenia canadensis (12: 459-60)—Blooms June 1—July 
17; 112 visitors observed, June 8—July 9; Pol, W. 

Long-tongued Bees (2)—Megachil.: Neotrypetes truncatus ¢ 2, 
se; Ceratin.: Ceratina 9. 

Short-tongued Bees (28)—Prosopid.: Prosopis pygmaea ¢ 9, 
saniculae 2, ziziae ¢ 2; Collet.: Colletes eulophi ¢; Halict.: Aga- 
postemon radiatus ¢ 9, Chloralictus caeruleus ¢, cressonii 9, illino- 
ensis 4, pilosus 9, sparsus ¢ 9, se, ab, versatus ¢ 2, ab, zephyrus 
éo 9, Evylaeus foxii 4, pectinatus 9, pectoralis 9, fq, truncatus 9, 
type, Halictus lerouxii 9, Odontalictus 9, Oxystoglossa confusa 9, 
pura ¢ 9, fq, Seladonia ¢ 9, fq; Sphecodini: Machaeris stygia 0, 
Sphecodes arvensis 9, Sphecodium cressonii ¢ 9°, fq; Andren. (9): 
Andrena platyparia, Opandrena serotina se, Trachandrena spir- 
aeana; Panurg.: Calliopsis andreniformis ¢. 

Other Hymenoptera (19)—Crabron.: Anacrabro, Clytochrysus, 
Solenius; Oxybel.: Oxybelus niger, 4-notatus, Philanth.: Cerceris 
astarte, clypeata; Pompil.: Ceropales fraterna, Pseudagenia; 
Eumen.: Ancistrocerus tigris, Leionotus perennis, Symmorphus de- 
bilis; Chrysid.: Hedychrum parvum, violaceum; Evani.: Foenus 
incertus, tarsatorius; Ichnewmon.: Lissonota tricincta, Polyblastus, 
Polysphincta. 

Diptera (43)—Bibion.: Seatopse pulicaria; Lept.: Hilarimorpha 
mikii, type; Bombyli.: Anthrax sinuosa, Geron calvus; Empid.: 
Empis loripedis, Parempis; Syrph.: Allograpta, Eristalis trans- 
versus, Mesogramma geminata fq, marginata, Orthoneura nitida, 
Paragus bicolor ab, tibialis fq, Pipiza femoralis, nigribarba, Syritta 
fq, Syrphus americanus, ribesii fq, Volucella vesiculosa, Xantho- 
gramma emarginata; Conop.: Oncomyia, Zodion fulvifrons, nanel- 
lum; Tachin.: Cistogaster occidua, pallasii, Linnaemyia, Metopia, 
Ocyptera tenuis, Siphona fq, Xanthomelana; Musc.: Pseudopy- 
rellia; Anthomy.: Phorbia acra, platura; Scatophag.: Cordylura; 
Sapromyz.: Sapromyza vulgaris; Seps.: Sepsis; Drosophil.: Droso- 
phila; Oscin.: Chlorops proxima, Elachiptera flavida, Hippelates 
flavipes, Oscinis trigramma, Siphonella inquilina. 

Coleoptera (19)—Coccinell.: Scymnus terminatus; Dermest.: 
Cryptorhopalum triste; Lampyr.: Podabrus brunnicollis; Malach.: 
Anthocomus; Cerambyc.: Euderces, Typocerus lugubris: Chry- 
somel.: Diabrotica 12-punctata; Bruch.: Bruchus bivulneratus, 
exiguus, mimus fq, musculus; Mordell.: Mordella marginata, tri- 
loba, Mordellistena limbalis, pubescens, Pentaria; Rhynchit.: 
Eugnamptus; Curculion.: Apion, Centrinus picumnus. 

Hemiptera (1)—Corimelaen.: Corimelaena lateralis. 


198 FLOWERS AND INSECTS—XXVI 


Erigenia bulbosa (12: 159-60).—Blooms March 15-April 21; 
63 visitors observed, March 20—April 21; Mis, W. 

Long-tongued Bees (7)—WMegachil. (¢): Ceratosmia, Osmia 
atriventris, pumila; Ceratin.: Ceratina <¢, fq, Zaodontomerus '; 
Bomb.: Bombus consimilis 2; Ap.: Apis se, ab. 

Short-tongued Bees (22)—Collet.: Colletes inaequalis ¢ 9, fq; 
Halict. (2): Agapostemon radiatus, Augochlora viridula, Chlora- 
lictus pilosus, sparsus, versatus, Curtisapis forbesii type, Evylaeus 
foxii, Halictus lerouxii, Oxystoglossa confusa, Seladonia; Andren.: 
Andrena earlini ¢ 9, ab, in cop, type, erythronii 3 9, salictaria 9, 
sayi 4’, Opandrena miserabilis ¢, Parandrena ¢ 9, Ptilandrena 
erigeniae ¢ 9, fq, type, Trachandrena forbesii 9, mariae ¢ 9, nuda 
9, rugosa J 9, fq, in cop, type. 

Other Hymenoptera (1)—Chrysid.: Holochrysis hilaris. 

Diptera (29)—Tipul.: Geranomyia; Stratiomy.: Odontomyia 
pubescens; Bombylt.: Bombylius major; Syrph.: Brachypalpus 
frontosus, Chilosia capillata, Eristalis dimidiatus ab, latifrons, 
Helophilus similis, Melanostoma obscurum fq, Mesogramma 
geminata, marginata, Platychirus hyperboreus, Syritta, Syrphus 
americanus; TZachin.: Epalpus, Euphorocera claripennis, Gonia 
capitata ab; Sarcophag.: Cynomyia, Helicobia 4-setosa; Musce.: 
Phormia regina, Pseudopyrellia; Anthomy.: Phorbia acra, platura, 
Hammomyia; Lonchae.: Lonchaea aberrans, parvicornis; Scato- 
phag.: Scatophaga; Oscin.: Elachiptera costata, Oscinis coxendix. 

Lepidoptera (2)—Papilion.: Pontia; Noctu.: Plusia simplex. 

Coleoptera (2)—Chrysomel.: Diabrotica vittata; Oedemer.: 
Asclera ruficollis. 


Eryngium yuccifolium (12: 459-60).—Blooms July 7—August 
30; 182 visitors observed, July 7—-August 12; Pol, W. 

Long-tongued Bees (13)—Megachil.: Megachilini: Megachile 
brevis ¢ 9, se, mendica J, petulans (', Coelioxyini: Coelioxys octo- 
dentata % 9, in cop, sayi @'; Ceratin.: Ceratina J 2; Bomb.: Bom- 
bias separatus ¢ 9, Bombus americanorum 9, impatiens $; Ap.: 
Apis; Nomad.: Cephen 9; Eypeol.: Epeolus bifasciatus ¢, Triepeo- 
lus lunatus @. 

Short-tongued Bees (20)—Prosopid. (g ¢) : Prosopis pygmaea, 
ziziae; Collet.: Colletes speciosus 9, type; Halict.: Agapostemon 
radiatus ¢ 9, Augochlora fervida 9, Chloralictus pilosus 9, sparsus 
©, se, versatus 9, se, Curtisapis forbesii 9, Evylaeus arcuatus 9, 
pectoralis 9, Halictus lerouxii ¢ 9, parallelus ¢ 9, Odontalictus 
2, Seladonia “4; Sphecodini: Machaeris stygia 9, Sphecodes arvensis 
3S 2, in cop, Sphecodium cressonii 2; Nomt.: Paranomia 2; Panurg.: 
Calliopsis andreniformis ¢ 9. 


CHARLES ROBERTSON 199 


Other Hymenoptera (58)—Crabron.: Protothyreopus rufifemur, 
Pseudocrabo; Ozybel.: Notoglossa americana, frontalis, Oxybelus 
4-notatus; Philanth.: Cereeris bicornuta, fumipennis, prominens, 
raui, Eucerceris, ab, Philanthus punctatus, ventilabris; Sphee.: 
Ammobia ichneumonea, nuda, pennsylvanica, Isodontia apicalis, 
Priononyx atrata, thomae, Sphex gracilis, nigricans, pictipennis in 
cop, vulgaris; Larr.: Astatus unicolor, Tachysphex belfragei, 
Tachytes aurulentus, distinctus, elongatus; Bembic.: Bicyrtes 4- 
fasciata, ventralis, Bembix nubillipennis, spinolae, Megastizus, 
Stizus; Pompil.: Arachnoproctonus, Ceropales elegans, Lopho- 
pompilus atrox, philadelphicus, Poecilopompilus navus, Pomp- 
iloides americanus, in cop, Prioenemoides fulvicornis; Vesp.: 
Polistes variatus; HLumen.: Ancistrocerus campestris, Eumenes 
belfragei, fraternus, Leionotus anormis in cop, arvensis, dorsalis fq, 
foraminatus, vagus, Monobia; Scoli.: Elis interrupta, obseura, 5- 
cincta, thoracica type, Scolia bicincta, nobilitata; Mutill.: Mutilla 
hexagona 4; Chalcid.: Leucospis. 

Diptera (59)—Taban.: Tabanus; Stratiomy.: Nemotelus, Odon- 
tomyia cincta; Mida.: Midas clavatus, tibialis; Bombyli.: Anthrax 
alternata, fulvohirta, Exoprosopa decora, fasciata, fascipennis, 
Geron rufipes, Systoechus; Syrph.: Allograpta, Eristalis aeneus, 
latifrons, tenax, transversus, Mesogramma geminata, marginata, 
polita, Milesia, Orthoneura nitida, Paragus tibialis, Sphaerophoria, 
Syritta; Conop.: Conops brachyrrhynchus, xanthopareus, On- 
comyia, Physocephala texana, tibialis, Zodion fulvifrons, nanellum, 
obliquefasciatum; Tachin.: Alophora aeneoventris, fumosa, 
Archytas analis, Belvosia bifasciata, Cistogaster occidua, pallasi, 
Gymnosoma, Leskia, Ocyptera lata, tenuis, Phorantha asteris, hum- 
eralis, magna, pruinosa, Senotainia rubriventris, trilineata, Spal- 
lanzania, Trichopoda pennipes, Trichophora; Sarcophag.: Sareco- 
phaga assidua; Musc.: Compsomyia, Protocalliphora, Pseudopyrel- 
lia; Anthomy.: Coenosia antica, Lispa uliginosa, Phorbia acra. 

Lepidoptera (21)—Nymphal.: Anosia, Basilarchia archippus, 
Cereyonis, Charidryas, Phyciodes, Speyeria; Lycaen.; Chryso- 
phanus, Everes, Uranotes; Papilion.: Euphoeades, Eurymus, 
Laertia, Pontia; Hesperi.: Limochores taumas, Pholisora catullus, 
Polites; Sesi.: Sesia sexfasciata; Ctenuch.: Scepsis; Arcti.: Ute- 
theisa; Noctu.: Acontia, Spragueia. 

Coleoptera (8)—Scarabae.: Euphoria sepulchralis, Trichius 
piger; Chrysomel.: Cryptocephalus; Melo.: Nemognatha, Pyrota 
terminata; Rhipiphor.: Myodites, Rhipiphorus limbatus; Cwr- 
culion.: Centrinus secutellum-album. 

Hemiptera (3)—Core.: Alydus eurinus; Lygae.: Lygaeus, 
Oncopeltus. 


200 FLOWERS AND INSECTS—XXVI_> 


Eulophus americanus (12: 459-60).—Blooms May 12—June 15; 
130 visitors observed, May 28—June 15; Pol, W. 

Long-tongued Bees (1)—Ceratin.: Zaodontomerus <4, 

Short-tongued Bees (21)—Prosopid.: Prosopis eulophi ¢ 9, fq, 
type, illinoensis 4', pygmaea J 9, saniculae ¢ 9, sayi 3 2, thaspii 9, 
ziziae ¢ 9; Collet.: Colletes aestivalis 2, eulophi <4, type; Halict.: 
Agapostemon radiatus 9, Chloralictus pruinosus 9, sc, sparsus ¢ Q, 
se, fq, versatus 9, Evylaeus arcuatus 9, pectoralis 9, se, Halictus 
lerouxii 9, sc, parallelus 9, Oxystoglossa confusa 9; Andren.: 
Opandrena personata 9, Trachandrena crataegi 9, sc; Panurg.: 
Heterosarus 9, se. 

Other Hymenoptera (30)—Crabron.: Pseudocrabro, Solenius, 
Xestocrabro 6-maculatus, texanus; Oxybel.: Notoglossa americana, 
frontalis, Oxybelus packardii; Philanth.: Cerceris clypeata, com- 
par; Sphec.: Chalybion, Sceliphron; Pompil.: Lophopompilus phil- 
adelphicus, Planiceps niger, Poecilopompilus navus, Psammochares 
tenebrosus; Vesp.: Polistes variatus; Ewmen.: Eumenes fraternus, 
Leionotus foraminatus, ziziae; Thynn.: Methoca; Chrysid.: Hedy- 
chrum violaceum, wiltii, Holopyga, Tetrachrysis caerulans; Figit.: 
Psilodora impatiens, Xyalosema; Chalcid.: Chalcis, Perilampus 
eyaneus, fulvicornis; Ichneumon.: Cryptus exulans. 

Diptera (59)—Chironom.: Ceratopogon fusculus fq, websteri; 
Mycetophil.: Sciara atrata; Bibion.: Scatopse pulicaria fq; Stra- 
tiomy.: Stratiomyia meigenii; Bombyli.: Argyramoeba albofasciata ; 
Empid.: Empis distans; Syrph.: Allograpta, Eristalis tenax, trans- 
versus, Mesogramma geminata, marginata fq, Orthoneura nitida, 
Paragus bicolor, tibialis, Sphaerophoria, Syritta ab, Syrphus ameri- 
canus, ribesii; Conop.: Oncomyia, Zodion fulvifrons, nanellum; 
Tachin.: Belvosia unifasciata, Biomyia georgiae (Type Masicera 
sordicolor Tn.), Cistogaster occidua, pallasi, Euphorocera clari- 
pennis, Exorista confinis, Ocyptera tenuis, Pachyophthalmus sig- 
natus fq, Paradidyma, Spallanzania, Trichopoda pennipes, Vivi- 
ania; Sarcophag.: Helicobia helicis fq, 4-setosa, Sarcophaga 
cimbicis, hunteri; Musc.: Graphomyia, Morellia fq, Myospila, 
Phormia regina, Pseudopyrellia; Anthomy.: Calythea, Limnophora 
fq, Phorbia acra, platura; Ortal.: Rivellia pallida, viridulans; 
Seps.: Nemopoda, Sepsis fq; Oscin.: Chlorops approximatinervis, 
mellea, proxima, Hippelates flavipes, plebejus, pusio, Oscinis cox- 
endix, soror. 

Coleoptera (7)—Hister.: Hister subrotundus; Lampyr.: Poda- 
brus tomentosus; Cerambyc.: Euderces; Chrysomel.: Haltica; 
Mordell.: Mordella marginata fq, Mordellistena limbalis; Curcu- 
lion.: Centrinites. 


CHARLES ROBERTSON 201 


Hemiptera (2)—Lygae.: Lygaeus; Caps.: Lygus. 


Heracleum lanatum (12: 459-60).—Blooms May 6—June 17; 
274 visitors observed, May 8—June 17; Pol, W. 

Long-tongued Bees (7)—Megachil.: Alcidamea simplex ¢ 9; 
Ceratin.: Ceratina ¢ 9, se; Ap.: Apis sc, fq; Nomad.: Heminomada 
2, Holonomada superba ¢', Nomada illinoensis 9, Phor 2; Eucer.: 
Tetralonia dilecta 9. 

Short-tongued Bees (38)—Prosopid.: Prosopis illinoensis ¢ 9, 
pygmaea ¢ 9, ab, saniculae J, sayi ¢ 9, fq, in cop, type, ziziae # 9, 
ab; Collet.: Colletes aestivalis ¢, inaequalis 9, sc; Halict. (9): 
Agapostemon radiatus se, Chloralictus pilosus sc, fq, sparsus se, 
versatus sc, fq, Evylaeus pectoralis se, fq, Halictus lerouxii, paral- 
lelus se, Oxystoglossa confusa, Seladonia; Sphecodini: Drepanium 
2, fq, Machaeris illinoensis 2, type, stygia 9, Proteraner ¢, Sphe- 
codes arvensis 9, heraclei 2, type, Sphecodium cressonii 2; Andren. 
(2): Andrena carlini, erythrogastra, pruni, sayi sc, Opandrena 
miserabilis sc, fq, cressonii sec, Parandrena, Ptilandrena g. maculati, 
Trachandrena claytoniae sc, fq, crataegi, forbesii sc, heraclei se, 
type, nuda se, fq, rugosa se, spiraeana. 

Other Hymenoptera (67)—Crabron.: Clytochrysus fq, Lopho- 
erabro, Ectemnius, Hypocrabro, Protothyreopus rufifemur, Pseudo- 
crabro fq, Rhopalum pedicellatum, scutellatum, Solenius fq, 
Xestocrabro 6-maculatus, texanus; Orybel.: Notoglossa americana, 
Oxybelus niger, 4-notatus fq; Sphec.: Chalybion, Chlorion, Seeli- 
phron, Sphex vulgaris; Larr.: Notogonidea, Tachysphex acutus; 
Pompil.: Anoplius illinoensis, virginiensis, Ceropales fraterna, 
Episyron, Planiceps feralis, Pompiloides marginatus, subviolaceus, 
Psammochares scelestus, tenebrosus; Vesp.: Polistes pallipes fq, 
variatus fq, rubiginosus, Vespula germanica, maculata; ELumen.: 
Ancistrocerus tigris, unifasciatus, Eumenes fraternus, Leionotus 
anormis, clypeatus, foraminatus, illinoensis, megaera, serophu- 
lariae, Symmorphus debilis, walshianus; Tiphi.: Tiphia clypeata, 
inornata, vulgaris ab, type; Chrysid.: Holopyga; Figit.: Eucoila, 
Eucoilidia; Chalcid.: Haltichella ornata, Elasmus, Perilampus ful- 
vicornis; Evani.: Foenus tarsatorius; Ichnewmon.: Ichneumon 
flavizonatus, jucundus, funestus, longulus, Lampronota americana, 
Phygadeuon vulgaris, Porizon conotracheli, Trogus vulpinus, Try- 
phon affinis, Metopius terminalis; Bracon.: Microbracon; Ten- 
thredin.: Dolerus aprilis. 

Diptera (137)—Mycetophil.: Sciara atrata fq, inconstans; 
Bibion.: Bibio albipennis, Dilophus obesulus fq, Scatopse pulicaria ; 
Taban.: Chrysops indus, striatus; Stratiomy.: Nemotelus fq, Odon- 


202 FLOWERS AND INSECTS—XXVI 


tomyia cincta, Stratiomyia apicula, discalis, meigenii fq, quater- 
naria; Bombylt.: Anthrax alternata, Bombylius atriceps, Toxo- 
phora; Empid.: Empis distans fq, levicula fq, type, Pachymeria, 
Rhamphomyia fumosa, mutabilis fq, priapulus ab, rava, Tachy- 
dromia; Syrph.: Allograpta, Ceria, Chilosia petulea, Chrysogaster 
nigripes, Criorhina decora, umbratilis, Didea, Eristalis bastardi, 
dimidiatus fq, transversus fq, Helophilus similis, Mallota cimbi- 
ciformis fq, posticata, Mesogramma marginata, Myiolepta nigra, 
strigilata, Orthoneura nitida, pictipennis, Paragus bicolor, Pipiza 
femoralis, festiva, nigribarba, pulchella, Pterallastes, Sphaero- 
phoria, Syritta, Syrphus americanus, ribesii, torvus, Temnostoma 
trifasciata type, Tropidia quadrata, Xylota bicolor; Conop.: On- 
comyia, Zodion fulvifrons, nanellum; Tachin.: Alophora aeneo- 
ventris, fumosa, Archytas analis, aterrima, Belvosia unifasciata, 
Blepharipeza, Brachycoma sarcophagina type, Chaetogaedia analis, 
Cistogaster occidua, pallasi, Cryptomeigenia, Euphorocera clari- 
pennis, Gonia capitata, Gymnochaeta, Gymnosoma, Hailarella, 
Hyalomyodes, Hyalurgus, Leucostoma atra, neomexicana, nigri- 
cornis, Pachyophthalmus signatus fq, Peleteria, Phorantha humer- 
alis type, pruinosa type, purpurascens, robertsonil type, Polidea 
americana type, Senotainia trilineata fq, Sturmia fraudulenta fq, 
phyciodis, Tachina robusta, Trichopoda pennipes; Sarcophag.: 
Cynomyia, Helicobia helicis fq, 4-setosa, Sarcophaga aldrichi, as- 
sidua, bullata, cimbicis, dux sarracenioides, impar, utilis; Musce.: 
Graphomyia fq, Lucilia caesar ab, sericata fq, sylvarum, Morellia 
fq, Phormia regina fq, Pseudopyrellia ab; Anthomy.: Antho- 
myiella fq, Calythea, Limnophora, Phorbia acra fq, platura fq; 
‘Seps.: Sepsis; Oscin.: Chlorops mellea, proxima ab, Hippelates 
flavipes, plebejus, pusio fq, Oscinis coxendix, trigramma, Siphon- 
ella cinerea, inquilina, Agromyz.: Agromyza latipes, Lobioptera. 

Lepidoptera (7)—Nymphal.: Basilarchia archippus, Cercyonis, 
Charidryas, Phyciodes; Papilion.: Iphiclides, Laertias; Hesperv.: 
Polites. 

Coleoptera (16)—Dermest.: Anthrenus castaneae, Cryptorho- 
palum haemorrhoidale, Orphilus; Lampyr.: Telephorus flavipes; 
Malach.: Anthocomus; Scarabae.: Euphoria sepulchralis, Trichius 
affinis, piger; Cerambyc.: Euderces; Chrysomel.: Diabrotica 12- 
punctata, vittata; Mordell.: Mordella marginata, Mordellistena 
biplagiata fq; Anthic.: Corphyra labiata; Melo.: Macrobasis; Cwr- 
culion.: Centrinites.. 

Hemiptera (2)—Corimelaen.: Corimelaena pulicaria; Caps.: 
Phytocoris. 


CHARLES ROBERTSON 203 


Osmorrhiza longistylis (12: 452, 459-60).—Blooms April 21- 
May 23; 71 visitors observed, May 4-23; Mis, W. 

Long-tongued Bees (8)—Megachil.: Ceratosmia 9, Diceratosmia 
¢; Ceratin.: Zaodontomerus ¢'; Bomb.: Bombus impatiens 9; Ap.: 
Apis; Nomad.: Gnathias cuneatus 2, Nomada parva ¢, sayi 9. 

Short-tongued Bees (24)—Prosopid.: Prosopis illinoensis ¢, 
pygmaea ¢\, sayi ¢ 9, fq, thaspii ¢, ziziae f; Halict.: (2); Aga- 
postemon radiatus se, splendens, Augochlora viridula, Chloralietus 
caeruleus, obscurus sc, type, pilosus sc, sparsus s¢, versatus se, 
Curtisapis coriacea sc, forbesii sc, Evylaeus pectoralis se, ab, 4- 
maculatus se, ab, Halictus lerouxii, Oxystoglossa confusa ab, pura, 
Seladonia; Sphecodini: Proteraner ¢; Andren.: Andrena geranii 
g, sayi 9. 

Other Hymenoptera (4)—Eumen.: Ancistrocerus tigris, Eu- 
menes fraternus; Chrysid.: Holochrysis hilaris; Evani.: Foenus 
tarsatorius. 

Diptera (27)—Bombyli.: Aldrichia, Bombylius major; Empid.: 
Empis distans ab, humilis type, loripedis; Syrph.: Allograpta, 
Chilosia cyanescens fq, petulea, Mesogramma geminata, marginata, 
Paragus bicolor, tibialis, Pipiza femoralis, Rhingia, Sphaerophoria, 
Sphegina campanulata type, rufiventris, Syritta ab, Syrphus 
ribesii; Conop.: Myepa vesiculosa; Tachin.: Gymnosoma, Peleteria, 
Siphona fq; Anthomy.: Hylemyia inornata, Phorbia platura; Psil.: 
Chyliza; Oscin.: Siphonella oscinina. 

Lepidoptera (2)—Papilion.: Eurymus; Hesperi.: Thanaos 
martialis. 

Coleoptera (5)—Bruch.: Bruchus minus; Mordell.: Mordel- 
listena biplagiata; Anthic.: Corphyra terminalis; Curculion.: 
Idiostethus subealvus, tubulatus. 

Hemiptera (1)—Caps.: Lygus. 


Oxypolis rigidior (12: 459-60).—Blooms July 31-September 
8; 157 visitors observed, August 14-September 8; Pol, W. 

Long-tongued Bees (1)—Ap.: Apis. 

Short-tongued Bees (6)—Prosopid. (ff 2): Prosopis pygmaea, 
ziziae ; Halict.: Chloralictus sparsus 2, sc, versatus ¢ 9, se, Halietus 
lerouxii 2; Sphecodini: Sphecodes arvensis ¢. 

Other Hymenoptera (73)—Crabron.: Lindenius errans, Sol- 
enius, Xestocrabro texanus, trifasciatus; Ozybel.: Notoglossa 
americana, frontalis, Oxybelus packardii, 4-notatus; Philanth.: 
Cerceris clypeata, compacta; Sphec.: Chalybion fq, Chlorion, Iso- 
dontia apicalis, Priononyx atrata, Sceliphron; Lerr.: Astatus uni- 
color, Larropis, Lyroda, Tachysphex belfragei, Tachytes elongatus; 


204 FLOWERS AND INSECTS—XXVI 


Bembic.: Stizus; Nysson.: Hoplisus simillimus, Pseudoplisus phale- 
ratus; Pompil.: Arachnoproctonus, Cryptocheilus fulgifrons, 
Lophopompilus philadelphicus, Priocnemoides fulvicornis, Psam- 
mochares relativus, Sophropompilus; Vesp.: Polistes variatus, 
rubiginosus; Humen.: Leionotus foraminatus, fundatus, histrion- 
alis type, ziziae; Scoli.: Elis 5-cincta, Scolia bicineta; Trphi: 
Tiphia clypeata, punctata type, transversa; Myrmos.: Myrmosa 
unicolor; Mutil. (¢): Sphaerophthalma, Mutilla hexagona; 
Chrysid.: Hedychrum violaceum, Holopyga, Tetrachrysis caeru- 
lans, venusta; Figit.: Aspicera, Cothonaspis, Figites impatiens fq, 
Xyalosema; Chalcid.: HEutrichosoma, Bruchophagus, Leucopsis, 
Perilampus fulvicornis, hyalinus; Ichneumon.: Ichneumon flavi- 
zonatus, Ceratosoma ab; Bracon.: Microdus simillimus, Agathis 
areolata, Chelonus, Urosigalphus, Apanteles crassicornis, Toxo- 
neuron abdominale, Macrodyctium, Microplitis croceipes, gortynae, 
Monogonogastra, Iphiaulax, Opius fuscipennis. 

Diptera (53)—Mycetophil.: Sciara atrata; Empid.: Par- 
empis; Syrph.: Allograpta, Mesogramma geminata, marginata, 
polita, Paragus bicolor, Spilomyia longicornis, Syritta, Syrphus 
ribesii; Pipuncul.: Chalarus; Conop.: Conops brachyrrhynchus, 
Zodion nanellum; Tachin.: Alophora aeneoventris, Belvosia uni- 
fasciata, Cistogaster occidua, Clytiomyia, Epigrimyia geniculata 
type, Exorista confinis, pyste, Euphorocera claripennis, Gymno- 
soma, Hypostena indecisa type, Ocyptera dosiades, Pachyophthal- 
mus signatus, Phorantha pupurascens, Senotainia rubriventris, 
trilineata, Spallanzania, Trichopoda pennipes; Sarcophag.: Heli- 
cobia helicis, 4-setosa, Sarcophaga assidua, cimbicis; Musc.: Lu- 
cilia sericata, sylvarum, Morellia, Musca, Pseudopyrellia; An- 
thomy.: Anthomyiella, Limnophora, Lispa consanguinea, Phorbia 
platura; Trypet.: Euaresta bella; Ephydr.: Ochthera; Oscin.: Hip- 
pelates flavipes fq, plebejus, pusio, Oscinis coxendix, trigramma, 
Siphonella cinerea; Agromyz.: Agromyza latipes, Leucopis. 

Lepidoptera (3)—Nymphal.: Basilarchia archippus; Lycaen.: 
Eupsyche; Hespert.: Limochores taumas. 

Coleoptera (16)—Coccinell.: Coccinella sanguinea, Hippodamea 
convergens; Latridi.: Corticaria; Lampyr.: Chauliognathus penn- 
sylvanicus; Scarabae.: Euphoria sepulchralis; Chrysomel.: Dia- 
brotica atripennis, 12-punctata, Luperaltica; Bruch.: Bruchus ecru- 
entatus ; Mordell.: Mordella melaena, Mordellistena limbalis; Melo.: 
Epicauta cinerea, pennsylvanica, Pyrota germari; Rhipiphor.: 
Rhipiphorus limbatus; Curculion.: Centrinus picumnus. 

Hemiptera (4)—Lygae.: Oncopeltus; Caps.: Lygus, Plagiogna- 
thus; Acanthi.: Triphleps. 


CHARLES ROBERTSON 205 


Neuroptera (1)—Chrysop.: Chrysopa. 

Aug. 20, 1909, insects taken as they came showed the following 
30 species and 85 individuals: 

Short-tongued Bees (1: 3)—Halict.: Chloralictus versatus 3. 

Other Hymenoptera (15: 30)—Crabron.: Solenius 1, Xesto- 
erabro texanus 3; Oxybel.: Notoglossa frontalis 1; Sphec.: Chaly- 
bion 15, Priononyx atrata 1, Sceliphron 4; Larr.: Lyroda 1; Nys- 
son.: Hoplisus simillimus 1, Pseudoplisus phaleratus 2; Pompil.: 
Lophopompilus philadelphicus 2, Prioenemoides fulvicornis 2; 
Vesp.: Polistes rubiginosus 1, variatus 2; Tiphi.: Tiphia clypeata 
1; Chrysid. Tetrachrysis caerulans 1. 

Diptera (14: 44)—Syrph.: Spilomyia longicornis 1, Syritta 5, 
Syrphus ribesii 1; Tachin.: Alophora aeneoventris 1, Belvosia uni- 
fasciata 9, Exorista pyste 1, Ocyptera dosiades 1, Pachyophthalmus 
signatus 4, Spallanzania 2; Sarcophag.: Helicobia helicis 7, Sar- 
cophaga assidua 4, cimbicis 5; Musc.: Morellia 2; Anthomy.: An- 
thomyiella 1. 


Pastinaca sativa (int, 12:459-60).—Blooms May 15—August 
10; 298 visitors observed, June 2—July 9; Pol, Y. 

Long-tongued Bees (7)—Megachil.: Megachile petulans 9; 
Ceratin.: Ceratina 9, sc; Bomb.: Bombias separatus 9, Bombus 
americanorum @° %, impatiens 9; Ap.: Apis; Anthophor.: Anthe- 
moessa <. 

Short-tongued Bees (25)—Prosopid.: Prosopis illinoensis ¢ 9, 
type, pygmaea 9, sayi ¢ 9, ziziae ¢ 9; Collet.: Colletes brevicornis 
3, type, eulophi ¢ 9; Halict.: Chloralictus sparsus ¢ 9, se, ab, type, 
versatus ¢ 9, sc, Curtisapis forbesii ¢, Evylaeus arcuatus 9, pee- 
toralis 2, sec, Halictus parallelus 2, Oxystoglossa confusa ?, Sela- 
donia ¢; Sphecodini: Sphecodes arvensis ¢ 9°, ab, clematidis ¢, 
Sphecodium cressonii ¢ 9; Andren.: Andrena platyparia ¢, pruni 
9, se, Opandrena cressonii 2, personata 9, se, type, serotina 9, type, 
Trachandrena crataegi 9, hippotes 9, nuda 9, se. 

Other Hymenoptera (94)—Crabron.: Clytochrysus, Ectemnius, 
Hypocrabro, Protothyreopus rufifemur, Pseudocrabro, Solenius fq, 
Xestocrabro 6-maculatus, trifasciatus; Orybel.: Notoglossa ameri- 
cana, emarginata, frontalis type, inornata, Oxybelus 4-notatus; 
Tryporyl.: Trypoxylon clavatum; Philanth.: Cerceris clypeata, 
compacta, fumipennis, kennicottii, Philanthus punctatus; Sphee.: 
Ammobia ichneumonea, pennsylvanica, Chalybion, Isodontia api- 
ealis, Sceliphron, Sphex nigricans, vulgaris; Larr.: Astatus unicolor, 
Lyroda; Nysson.: Pseudoplisus phaleratus; Pompil.: Anoplius illi- 
noensis, virginiensis, Arachnoproctonus, Ceropales fraterna, 


206 FLOWERS AND INSECTS—XXVI 


Lophopompilus atrox, philadelphicus, Poecilopompilus navus, Pom- 
piloides americanus fq, divisus, marginatus, subviolaceus, Psam- 
mochares tenebrosus; Vesp.: Polistes pallipes, Vespula maculata; 
Eumen.: Ancistrocerus campestris, tigris, unifasciatus, Eumenes 
fraternus, Leionotus foraminatus fq, fulvipes, scrophulariae, ziziae, 
Monohia, Symmorphus debilis, walshianus, Zethus; Scoli.: Elis 5- 
eincta; Tiphi.: Tiphia vulgaris; Mutill. (¢): Sphaerophthalma, 
Mutilla hexagona; Chrysid.: Hedychrum violaceum, Holopyga fq, 
Tetrachrysis nortonii; Figit.: Aspicera, Psilodora impatiens; 
Chalcid.: Leucospis, Perilampus triangularis, cyaneus, platygaster, 
Pachyneuron; Hvani.: Foenus incertus, tarsatorius, Hyptia; Ichneu- 
mon.: Agrothereutes limatus, Ichneumon flavizonatus, jucundus, 
succinctus, Colpognathus, Cryptus rufoannulatus, Eiphosoma, 
Glypta simplicipes, Hemiteles, Porizon conotracheli, Proclitus, Tro- 
gus, Metopius terminalis; Bracon.: Orgilus, Euphorus; Cardio- 
chiles, Habrobracon, Microplitis gortynae, Iphiaulax; Tenthredin.: 
Hylotoma humeralis; Scelion.: Teleas. 

Diptera (114)—Mycetophil.: Sciara atrata, vulgaris; Bibion.: 
Seatopse pulicaria; Taban.: Chrysops striatus, Therioplectes; Stra- 
tiomy.: Allognosta fuscitarsis, Stratiomyia meigenii; Bombylv.: 
Anthrax sinuosa, Argyramoeba oedipus; Scenopin.: Scenopinus; 
Empid.: Empis distans, Parempis; Syrph.: Allograpta fq, Baccha 
aurinota, fuscipennis, Didea, Eristalis aeneus, dimidiatus, flavipes, 
transversus, Helophilus latifrons, similis, Mallota cimbiciformis, 
Mesogramma geminata, marginata fq, Orthoneura nitida in cop, 
Paragus bicolor, tibialis, Pipiza festiva, nigribarba, pulchella, Platy- 
chirus hyperboreus, quadratus, Sphaerophoria, Syritta fq, Syrphus 
arcuatus, ribesii, Tropidia quadrata; Conop.: Conops brachyrrhyn- 
chus, Myopa vesiculosa, Zodion nanellum; Tachin.: Araba, Belvosia 
unifasciata fq, Biomyia, Blepharipeza, Brachycoma intermedia 
type, Ceratomyiella, Chaetoplagia, Cistogaster occidua, Clytiomyia, 
Cryptomeigenia, Distichona varia, Ennyomma globosa, Kumyo- 
theria illinoensis type, Euphorocera claripennis, Exorista confinis 
fq, nigripalpis, Frontina aletiae, frenchii, Gymnosoma, Gymno- 
prosopa clarifrons type, Linnaemyia fq, Macquartia, Ocyptera 
tenuis, Pachyopthalmus signatus, floridensis, Phorantha purpuras- 
cens, Senotainia rubriventris, trilineata, Spallanzania, Sturmia 
inquinata, Tachina mella, rustica, Trichopoda pennipes fq, Tricho- 
phora, Winthemia fq, Xanthomelana; Sarcophag.: Helicobia helicis 
fq, 4-setosa, Sarcophaga alcedo, assidua, cimbicis, haemorrhoidalis, 
hunteri, sinuata; Musc.: Calliphora erythrocephala, Compsomyia 
fq, Graphomyia, Lucilia caesar, Morellia fq, Musca, Myospila, Phor- 
mia regina, Protocalliphora, Pseudopyrellia; Anthomy.: Calythea, 


CHARLES ROBERTSON 207 


Hyetodosia, Limnophora, Ophyra fq, Phorbia acra fq; Ortal.: 
Camptoneura, Rivellia viridulans, Seoptera; Sapromyz.: Sapro- 
myza vulgaris; Seps.: Sepsis; Oscin.: Chlorops assimilis, mellea, 
proxima, Hippelates flavipes, pusio, Meromyza, Ossinis soror; Agro- 
myz.: Lobioptera. 

Lepidoptera (9)—Nymphal.: Anosia, Basilarchia astyanax, 
Hypatus; Lycaen.: Chrysophanus, Cyaniris, Thecla calanus; Hes- 
peri.: Limochores taumas; Sesi.: Sesia pictipes; Pyromorph.: Har- 
risina. 

Coleoptera (42)—Coccinell.: Coccinella 9-notata, sanguinea, 
Hippodamea parenthesis, convergens, Megilla; Dermest.: Anthrenus 
castaneae, Attagenus fq, Cryptorhopalum haemorrhoidale; Nitidul.; 
Carpophilus; Elater.: Agriotes; Buprest.: Agrilus difficilis, egenus; 
Lampyr.: Calopteron, Chauliognathus marginatus, Photinus, Poda- 
brus rugulosus, tomentosus, Pyractomena, Telephorus flavipes; 
Malach.: Anthocomus, Attalus; Scarabae.: Euphoria fulgida, sepul- 
chralis, Trichius piger; Cerambyc.: Acmaeops directa, Callimoxys 
fuscipennis, sanguinicollis, Euderces, Typocerus sinuatus, velutinus ; 
Chrysomel.: Anomoea, Diabrotica vittata, Pachybrachys, Tri- 
rhabda; Melandry.: Nothus; Mordell.: Mordella marginata, 
melaena, 8-punctata, Mordellistena ornata, Pentaria; Melo: Epi- 
cauta cinerea, Macrobasis. 

Hemiptera (6)—Corimelaen.: Corimelaena pulicaria fq; Beryt.: 
Corizus; Lygae.: Lygaeus; Caps.: Lygus, Phytocoris, Plagiogna- 
thus. 

Neuroptera (1)—Chrysop.: Chrysopa. 


Polytaenia nuttallii (12: 459-60).—Blooms May 3—June 17; 75 
visitors observed, May 9—June 8; Mis, Y. 

Long-tongued Bees (4)—Megachil.: Coelioxys 8-dentata ¢; 
Bomb.: Bombus americanorum 9; Ap. Apis; Nomad.: Nomada 
illinoensis 9. 

Short-tongued Bees (20)—Prosopid. (¢ 2): Prosopis pygmaea 
in cop, ziziae ab; Collet.: Colletes aestivalis ¢ 9, inaequalis 9, se; 
Halict (2): Augochlora fervida, viridula, Chloralictus pilosus se, 
pruinosus sc, sparsus sc, tegularis sc, versatus sc, Evylaeus pec- 
toralis, Odontalictus se, Oxystoglossa similis se, Seladonia se; An- 
dren.: Andrena nasonii 2, se, Opandrena cressonii ¢ Q, se, ziziae ff 
9, se, Trachandrena crataegi 9, se, forbesii 9. 

Other Hymenoptera (20)—Crabron.: Ectemnius, Hypoerabro, 
Pseudocrabro, Solenius; Sphec.: Sceliphron; Vesp.: Polistes pal- 
lipes, variatus; Eumen.: Ancistrocerus campestris, Eumenes fra- 
ternus, Leionotus anormis, clypeatus, foraminatus, histrionalis, 


208 FLOWERS AND INSECTS—XXVI 


illinoensis, scrophulariae, vagus, ziziae, Symmorphus walshianus; 
Tiphi.: Tiphia inornata; Chalcid.: Hurytoma. 

Diptera (17)—Strotiomy.: Allognosta obscuriventris, Nemotelus, 
Stratiomyia apicula; Syrph.: Allograpta, Mesogramma geminata, 
marginata, Paragus bicolor, tibialis, Sphaerophoria, Tropidia 
mamillata; Conop.: Oncomyia, Zodion fulvifrons; Tachin.: Cisto- 
gaster occidua, pallasi, Leucostoma atra, nigricornis, Linnaemyia, 
Phorantha purpurascens; Musc.: Pseudopyrellia; Anthomy.: 
Phorbia acra ab, platura; Ortal.: Rivellia pallida; Oscin.: Chlorops 
proxima, Hippelates flavipes; Agromyz.: Leucopis, Lobioptera. 

Coleoptera (1)—Curculion.: Centrinites. 

Hemiptera (3)—Beryt.: Corizus; Pentatom.: Euschistus icteri- 
cus; Caps.: Lygus. 

May 20, 25, 26, 1910, insects taken as they came to the flowers 
showed the following 37 species and 294 individuals: 

Long-tongued Bees (2:5)—Bomb.: Bombus americanorum 1; 
Ap. Apis 4. 

Short-tongued Bees (12:126)—Prosopid.: Prosopis ziziae 3; 
Collet.: Colletes aestivalis 18; Halict.: Augochlora fervida 4, viri- 
dula 2, Chloralictus versatus 18, Evylaeus pectoralis 1, Oxysto- 
glossa similis 9, Seladonia 5; Andren.: Opandrena cressonii 9, ziziae 
45, Trachandrena crataegi 11, forbesii 1. 

Other Hymenoptera (9: 32)—Crabron.: Hypocrabro 1, Solenius 
2; Vesp.: Polistes variatus 15; Humen.: Eumenes fraternus 1, 
Leionotus foraminatus 4, histrionalis 4, illinoensis 1, ziziae 2, Sym- 
morphus walshianus 2. 

Diptera (12: 127)—WStratiomy.: Nemotelus 3, Stratiomyia api- 
cula 2; Syrph.: Mesogramma geminata 1, marginata 11, Paragus 
bicolor 1, tibialis 1; Conop.: Oncomyia 1, Zodion fulvifrons 1; 
Musc.: Pseudopyrellia 2; Anthomy.: Phorbia acra 99, platura 4; 
Agromyz.: Lobioptera 1. 

Hemiptera (2:4)—Beryt. Corizus 3; Pentatom.: Euschistus 
ictericus 1. 


Sanicula canadensis.—Blooms May 30-July 20; four visitors 
observed, June 15, 17; Mis, W. 

Short-tongued Bees (3:3)—Halict. (2): Chloralictus versatus 
1, Evylaeus 4-maculatus 1; Prosopid.: Prosopis saniculae 9, 1. 

Diptera (1: 2)—Syrph.: Mesogramma geminata 2. 

Sanicula marilandica.—Blooms May 6—June 5; 31 visitors ob- 
served, May 14, 16, 25; Mis, Y. 

Short-tongued Bees (14)—Halict. (2): Augochlora viridula, 
Chloralictus sparsus, tegularis, Curtisapis coriacea, Evylaeus foxii, 


CHARLES ROBERTSON 209 


Oxystoglossa confusa; Prosopid.: Prosopis pygmaea ¢, saniculae 
3; type, sayi g', ziziae 9; Andren.: Opandrena cressonii 2, se, per- 
sonata <j, ziziae 9, sc, Trachandrena rugosa 9, se. 

Other Hymenoptera (3)—Kumen.: Ancistrocerus tigris Sym- 
morphus debilis, Bracon.: Bracon ashmeadi type. 

Diptera (12)—Mycetophil.: Sciara atrata; Empid.: Brachy- 
stoma robertsonii type, Empis distans, nuda; Syrph.: Mesogramma 
geminata, marginata; Tachin.: Siphona; Musc.: Myospila; An- 
thomy.: Homalomyia prostrata; Sapromyz.: Sapromyza longipen- 
nis; Heteroneur.: Clusia; Oscin.: Siphonella oscinina. 

Hemiptera (2)—Corimelaen.: Corimelaena pulicaria; Caps.: 
Lopidea. 


Sium cicutaefolium (12: 459-60).—Blooms July 19-—Septem- 
ber 7; 220 visitors observed, July 20-September 1; Pol, W. 

Long-tongued Bees (4)—Bomb. (9, ¢) : Bombus americanorum, 
impatiens; Ap.: Apis; Eucer.: Melissodes agilis ¢. 

Short-tongued Bees (17)—Prosopid.: Prosopis pygmaea ¢, 
sayi Q, ziziae 2; Collet.: Colletes americanus ¢, eulophi ¢; Halict.: 
Chloralictus illinoensis ¢ 9, sparsus ?, versatus ¢ 9, se, zephyrus 
3 9, Curtisapis coriacea ¢ 9, Evylaeus arcuatus 4, truncatus 9, 
Halictus lerouxii ¢, Odontalictus ?, Seladonia 2; Sphecodini: Mach- 
aeris stygia ¢ 9, fq, type, Sphecodes arvensis ¢. 

Other Hymenoptera (97)—Crabron.: Clytochrysus fq, Ectem- 
nius fq, Lindenius errans fq, Solenius, Xestocrabro 6-maculatus, 
trifasciatus; Oxybel.: Notoglossa americana fq, emarginata, fron- 
talis fq, Oxybelus niger type, packardii, 4-notatus fq; Trypozryl.: 
Trypoxylon clavatum ; Philanth.: Cerceris bicornuta, clypeata, echo, 
finitima, kennicottii, prominens, Philanthus punctatus; Sphec.: 
Chalybion, Chlorion, Isodontia apicalis, Priononyx thomae, Seeli- 
phron, Sphex gracilis, vulgaris; Larr.:; Larropsis, Lyroda, Noto- 
gonidea fq, Tachysphex terminatus, Tachytes elongatus; Bembic.: 
Megastizus; Nysson.: Hoplisoides, Nysson plagiatus, Zanysson 
plesia, Pseudoplisus phaleratus; Pompil.: Ageniella accepta, 
longula, Ceropales fraterna, Episyron, Lophopompilus atrox, phil- 
adelphicus, Pompiloides marginatus, subviolaceus, Psammochares 
relativus, tenebrosus; Vesp.: Polistes pallipes, variatus, Vespula 
germanica; Eumen.: Ancistrocerus campestris, tigris, Eumenes 
fraternus, Leionotus foraminatus, scrophulariae, ziziae, Monobia; 
Scoli.: Elis interrupta, 5-cinecta, Scolia bicincta; Tiphi.: Tiphia 
punctata ; Bethyl.: Goniozus; Thynn.: Methoca; Myrmos.: Myrmosa 
parvula type; Mutill.: Sphaerophthalma ¢; Chrysid.: Holochrysis 
verticalis, Holopyga, Tetrachrysis caerulans; Figit.: Eucoila mel- 


210 FLOWERS AND INSECTS—XXVI 


lipes fq, Eucoilidia, Figites impatiens, Psilodora erythropus, im- 
patiens, Trirhoptrasema, Xyalosema; Chalcid.: Chalcis, Haltichella 
ornata, xanticles, Smiera debilis; Elasmus, Bruchophagus, Eury- 
toma, Leucospis, Perilampus cyaneus, Eutelus, Syntomopus; Ich- 
neumon.: Agrothereutes mundus, Ichneumon flavizonatus, Cremas- 
tus retiniae, Cryptus persimilis, Limneria eurycreontis; Bracon.: 
Chelonus; Apanteles illinoensis, terminalis, Microplitis ceratomiae, 
Iphiaulax. 

Diptera (74)—Mycetophil.: Sciara atrata; Taban.: Chrysops 
striatus; Stratiomy.: Stratiomyia meigenii; Bombyli.: Anthrax 
alternata, Exoprosopa fasciata, fascipennis, Sparnopolius, Toxo- 
phora; Empid.: Parempis; Syrph.: Allograpta, Eristalis aeneus, 
tenax, Mesogramma geminata, marginata, polita, Orthoneura nitida, 
Paragus tibialis, Pipiza pulchella, Platychirus quadratus, Syritta, 
Syrphus ribesii, Tropidia albistylum, quadrata; Tachin.: Belvosia 
unifasciata, Chaetogaedia analis, Clytiomyia, Distichona varia, En- 
nyomma globosa, Euphorocera claripennis, Frontina aletiae, Gym- 
nosoma, Hypostena variabilis, Leucostoma atra, Linnaemyia, Pach- 
yophthalmus signatus, floridensis, Panzeria fq, Phasiociista, Phor- 
antha purpurascens fq, Senotainia rubriventris, trilineata fq, 
Spallanzania, Sturmia distincta, Trichopoda pennipes; Sarco- 
phag.: Helicobia helicis, 4-setosa, Sarcophaga assidua fq, haemor- 
rhoidalis; Musc.: Compsomyia, Graphomyia, Lucilia sericata, Mor- 
ellia, Musca, Phormia regina, Protocalliphora, Pseudopyrellia, 
Stomoxyz; Anthomy.: Calythea, Coenosia fuscopunctata, Homalo- 
myia prostrata, Limnophora, Ophyra, Phorbia acra; Ortal.: . 
Euxesta; Trypet.: Plagiotoma, Seps.: Themira; Ephydr.: Ochthera, 
predaceous; Oscin.: Chlorops proxima, Hippelates flavipes, pusio, 
Meromyza, Siphonella cinerea, Agromyz.: Agromyza latipes. 

Lepidoptera (5)—Nymphal.: Anosia, Hypatus; Lycaen.: 
Cyaniris, Eupsyche; Papilion.: Pieris. 

Coleoptera (1)—Coccinell.: Coccinella sanguinea, Megilla; 
Dermest.: Attagenus; Lampyr.: Chauliognathus pennsylvanicus, 
Ditemnus, Photinus; Malach.: Collops; Scarabae.: Euphoria sepul- 
chralis; Chrysomel.: Diabrotica 12-punctata, longicornis, vittata ; 
Bruch.: Bruchus discoideus, hibisci, obtectus; Mordell.: Mordella 
marginata, melaena, 8-punctata; Melo.: Epicauta pennsylvanica; 
Curculion.: Centrinus picumnus. 

Hemiptera (4)—Corimelaen.: Corimelaena pulicaria; Lygae.: 
Lygaeus; Caps.: Lopidea fq; Acanthi.: Triphleps. 


_. Taenidia integerrima (12: 459-60).—Blooms April 27—June 
14; 113 visitors observed, May 10—June 3; Mis, Y. 


CHARLES ROBERTSON 211 


Long-tongued Bees (14)—Megachil.: Alcidamea simplex 9, 
Ceratosmia 2; Ceratin.: Ceratina 9, Zaodontomerus ¢; Bomb: 
Bombias separatus 2; Ap.: Apis; Nomad.: Centrias americanus ¢ 9, 
Gnathias cuneatus ?, ovatus 9, Holonomada affabilis 9, Nomada 
cressonii ¢', denticulata 9, sayi 2, Xanthidium luteolum 9. 

Short-tongued Bees (33)—Prosopid.: Prosopis illinoensis ¢ 9, 
pygmaea ¢ 9, ab, saniculae 9, sayi 2, ab, ziziae ¢ 9; Collet.: Col- 
letes aestivalis ¢'; Halict. (2): Augochlora fervida, Chloralictus 
nymphaearum, sparsus sc, fq, tegularis, versatus se, zephyrus, 
Evylaeus foxii se, pectoralis, 4-maculatus sc, Odontalictus fq, Oxy- 
stoglossa confusa, pura, similis sc, ab, Seladonia fq; Spheecodini; 
Machaeris stygia 9, Proteraner 4’, Sphecodes arvensis 2, Spheecodium 
pimpinellae 9, type; Andren.: Andrena nasonii ¢ 9, se, ab, Opan- 
drena cressonii ¢ 9, sc, personata ¢ 9, se, fq, serotina ¢ 9, se, ziziae 
9, se, ab, Trachandrena claytoniae ¢ 9, sc, crataegi ¢ 9, se, heraclei 
9, nuda 9. 

Other Hymenoptera (21)—Crabron.: Clytochrysus, Solenius, 
Xestocrabro trifasciatus ; Sphec.: Chalybion, Sceliphron, Sphex vul- 
garis; Pompil.: Anoplius illinoensis; Zumen.: Ancistrocerus tigris, 
Eumenes fraternus, Leionotus anormis, clypeatus, foraminatus, his- 
trionalis, illinoensis, scrophulariae, Symmorphus debilis; Tiphs.: 
Tiphia clypeata; Chrysid.: Chrysis intricata; Evani.: Foenus in- 
certus; Ichneumon.: Angitia, Pharsalia. 

Diptera (34)—Stratiomy.: Nemotelus; Bombyli.: Anthrax sinu- 
osa f, Toxophora; Empid.: Empis levicula, Parempis; Syrph.: 
Baccha fuscipennis, Chilosia petulea, Mesogramma geminata, mar- 
ginata, Orthoneura nitida, Sphaerophoria, Syritta fq, Syrphus 
americanus, ribesii; Conop.: Oncomyia, Zodion fulvifrons; Tachin.: 
Cistogaster occidua, Leucostoma nigricornis, Linnaemyia, Ocyp- 
tera lata, tenuis, Peleteria, Trichophora; Sarcophag.: Helicobia 
helicis, Musc.:; Lucilia sericata, sylvarum; Anthomy.: Coenosia an- 
tica; Ortal.: Rivellia pallida; Sapromyz.: Sapromyza vulgaris; 
Seps.: Sepsis; Oscin.: Chlorops assimilis, mellea, Elachiptera flavida 
fq, Hippelates plebejus. 

Lepidoptera (1)—Nymphal.: Charidryas. 

Coleoptera (9)—Hister.: Hister subrotundus; Malach.: Antho- 
comus; Chrysomel.: Babia; Bruch.: Bruchus bivulneratus, hibisei ; 
Mordell.: Mordella marginata, Mordellistena aspersa; Curculion.: 
Centrinites, Limnobaris. 

Hemiptera (1)—Corimelaen.: Corimelaena lateralis. 


Thaspium aureum atropurpurem (12: 454).—Blooms May %- 
July 1; one visitor observed, June 9; Mis, R. 
Diptera.—Empid.: Empis loripedis. 


212 FLOWERS AND INSECTS—XXVI 


Thaspium aureum trifoliatum (12: 459-60).—Blooms May 13- 
July 18; 60 visitors observed, June 5-17; Mis, Y. 

Long-tongued Bees (4)—Megachil.: Trypetini: Neotrypetes 
truncatus <, Coelioxyini: Coelioxys sayi ¢'; Nomad.: Nomada den- 
ticulata 2, sayi 9. 

Short-tongued Bees (21)—Prosopid.: Prosopis crataegi 4, illi- 
noensis ¢ 9, pygmaea ¢ 9, saniculae ¢' 9, sayi ¢ 9, ab, thaspii 
2, type, ziziae ¢ 2, fq; Collet.: Colletes eulophi ¢'; Halict. (Q): 
Augochlora viridula se, Chloralictus sparsus se, tegularis se, Evy- 
laeus pectoralis sc, Halictus lerouxii, Oxystoglossa pura, similis se; 
Spheeodini: Proteraner 4; Andren.: Andrena carlini ?, Opandrena 
eressonii 9, sc, personata 0’, ziziae 9, sc, ab; Panurg.: Hetero- 
sarus §. 

Other Hymenoptera (10)—Crabron.: Pseudocrabro, Solenius; 
Sphec.: Sphex vulgaris; Humen.: Ancistrocerus unifasciatus, 
Eumenes fraternus, Leionotus foraminatus, fulvipes, scrophulariae, 
Zendalia acolhuus; Hvant.: Foenus tarsatorius. 

Diptera (20)—Empid.: Empis loripedis; Syrph.: Allograpta, 
Baccha fuscipennis, Mesogramma geminata, marginata, Paragus 
bicolor, tibialis, Sphaerophoria, Syritta, Volucella vesiculosa, Xan- 
thogramma flavipes; Conop.: Oncomyia, Zodion nanellum; Tachin.: 
Cistogaster occidua, Exorista confinis, Leskiomima prima, Siphona; 
Sarcophag.: Helicobia helicis; Musc.: Phormia regina; Seps.: 
Sepsis. 

Lepidoptera (1)—Lycaen.: Cyaniris. 

Coleoptera (2)—Cerambyc.: Euderces; Bruch.: Bruchus eruen- 
tatus. 

Hemiptera (2)—Lygae.: Lygaeus; Caps.: Lopidea. 


Zizia aurea (12:451-2, 459-60).—Blooms April 18—June 9; 
179 visitors observed, May 3-26; Mis, Y. 

Long-tongued Bees. (19)—Stelid.: Microstelis ¢, Megachil.: 
Alcidamea simplex ¢ ?, Osmia atriventris 9, se, pumila 9; Ceratin.: 
Ceratina ¢ 9, ab; Bomb. (2) : Bombias auricomus, scutellaris, sep- 
aratus, Bombus americanorum, consimilis, impatiens; Ap.: Apis sc; 
Nomad.: Centrias americanus <4, Gnathias ovatus ?, Holonomada 
affabilis 2, superba ¢ 9, Nomada denticulata ¢ 9, sayi ¢ 9; Eucer.: 
Tetralonia dilecta ¢ 9. 

Short-tongued Bees (42)—Prosopid.: (¢ 2) ; Prosopis pygmaea 
in cop, sayi, ziziae fq, type; Collet.: Colletes aestivalis ¢ 9, ab, in- 
aequalis 9; Halict. (2) : Agapostemon radiatus, Augochlora fervida, 
viridula, Chloralictus albipennis se, type, coreopsis, pilosus se, fq, 
pruinosus sc, sparsus se, fq, tegularis sc, type, versatus sc, ab, 


CHARLES ROBERTSON 213 


zephyrus, Curtisapis coriacea, forbesii, Evylaeus foxii, pectoralis 
sc, 4-maculatus, Halictus lerouxii fq, parallelus, Odontalictus se, fq, 
Oxystoglossa confusa sc, fq, pura, similis se, ab, Paralictus platy- 
parius type, simplex, Seladonia se, ab; Sphecodini: Proteraner ¢ 9, 
Sphecodes arvensis 9, Sphecodium cressonii 9, type; Andren.: 
Andrena illinoensis ¢', nasonii ¢', sayi 9, Opandrena cressonii ¢ 9, 
se, fq, ziziae J’ 9, sc, ab, in cop, type, Trachandrena claytoniae 9, 
crataegi ¢ 9, sc, fq, forbesii 2, nuda 9. 

Other Hymenoptera (32)—Crabron.: Clytochrysus, Ectemnius 
fq, Pseudocrabro, Solenius ab, Xestocrabro 6-maculatus, texanus, 
trifasciatus fq; Oxybel.: Oxybelus 4-notatus; Pompil.: Anoplius 
illinoensis, Episyron, Psammochares tenebrosus; Vespi.: Polistes 
variatus; Ewmen.: <Ancistrocerus campestris, tigris, Eumenes 
fraternus, Leionotus anormis fq, clypeatus fq, foraminatus, his- 
trionalis, illinoensis, megaera, perennis, scrophulariae, vagus, ziziae 
ab, Symmorphus walshianus; Tiphi.: Tiphia elypeata; Chrysid.: 
Gonochrysis; Figit.: Eucoilidia; Ichneumon.: Cremastus epagoges, 
Exyston ab; Tenthredin.: Pseudosiobla. 

Diptera (65)—Mycetophil.: Sciara atrata; Bibion.: Bibio albi- 
pennis; Simuli.: Simulium; Stratiomy.: Allognosta obscuriventris, 
Nemotelus; Bombyli.: Aldrichia; Empid.: Empis distans, loripedis; 
Syrph.: Chilosia petulea, Chrysogaster ontario, Eristalis dimidiatus, 
latifrons, Helophilus latifrons, similis, Mesogramma marginata, 
Orthoneura pictipennis, Paragus bicolor, tibialis, Sphaerophoria, 
Sphegina rufiventris, Syritta, Syrphus ribesii, Tropidia mamillata; 
Conop.: Oncomyia, Zodion fulvifrons; Tachin.: Alophora aeneoven- 
tris, Apinops, Ceratomyiella conica type, Cistogaster occidua ab, 
pallasi, Leucostoma atra type, Linnaemyia, Ocyptera lata, Pachy- 
ophthalmus signatus, Phorantha magna, purpurascens, Siphona, 
Sturmia nigrita type, Tachina rustica, Trichopoda pennipes; 
Sarcophag.: Helicobia helicis, Sarcophaga sinuata; Musc.: Lucilia 
caesar, sylvarum, Morellia, Phormia regina, Pseudopyrellia; 
Anthomy.: Calythea, Coenosia lacteipennis, Hylemyia inornata ab, 
Phorbia acra ab, cinerella, platura; Ortal.: Rivellia pallida; Seps.: 
Sepsis; Oscin.: Chlorops assimilis, proxima, pulverea, Hippelates 
flavipes, plebejus, Meromyza, Oscinis soror, Siphonella cinerea; 
Agromyz.: Agromyza aeneoventris. 

Lepidoptera (5)—Nymphal.: Phyciodes; Lycaen.: Everes, 
Heodes; Papilion.: Eurymus; Noctu.: Plusia simplex. 

Coleoptera (13)—Coccinell.: Coccinella sanguinea, Megilla; 
Erotyl.: Languria; Hister.: Hister americanus; Lampyr.: Tele- 
phorus bilineatus, flavipes; Scarabae.: Onthophagus; Chrysomel.: 


214 FLOWERS AND INSECTS—XXVI 


Ceratoma, Diabrotica 12-punctata, vittata; Curculion.: Centrinites, 
Centrinus picumnus; Cerambyc.: Acmaeops nigripennis. 

Hemiptera (3)—Pentatom.: Euschistus ictericus ; Caps.: Lygus, 
Plagiognathus. 

May 10, 1910, the following 65 species and 300 individuals were 
taken as they came: 

Long-tongued Bees (4: 8)—Bomb.: Bombias separatus 1, 
Bombus americanorum 1; Ap.: Apis 5, Nomad.: Holonomada 
superba 1. 

Short-tongued Bees (22: 189)—Prosopid.: Prosopis pygmaea 5, 
ziziae 1; Collet.: Colletes aestivalis 18; Halict.: Agapostemon 
radiatus 3, Augochlora fervida 1, viridula 1, Chloralictus coreopsis 
1, pilosus 6, tegularis 1, versatus 34, Evylaeus pectoralis 1, Halictus 
lerouxii 11, parellelus 1, Odontalictus 13, Oxystoglossa confusa 5, 
similis 17, Seladonia 15; Andren.: Opandrena eressonii 13, ziziae 
27, Trachandrena claytoniae 1, crataegi 13, forbesii 1. 

Other Hymenoptera (14: 27)—Crabron.: Clytochrysus 1, Ee- 
temnius 1, Solenius 6, Xestoecrabro texanus 1; Vesp.: Polistes 
variatus 2; Humen.: Ancistrocerus tigris 2, Eumenes fraternus 1. 
Leionotus anormis 2, clypeatus 2, foraminatus 3, histrionalis 2, 
megaera 1; Tiphi.: Tiphia clypeata 1; Ichnewmon.: Exyston ab- 
dominalis 2. 

Diptera (21: 69)—Bibion.: Bibio albipennis 6; Syrph.: Eris- 
talis latifrons 1, Helophilus latifrons 2, Mesogramma marginata 4, 
Orthoneura pictipennis 3, Paragus bicolor 1, tibialis 3, Sphaero- 
phoria 4, Sphegina rufiventris 1, Syritta 1; Conop.: Zodion fulvi- 
frons 4; Tachin.: Cistogaster occidua 5, pallasi 5, Siphona 2, 
Tachina rustica 1; Sarcophag.: Helicobia helicis 1; Musc.: Lucilia 
caesar 1, sylvarum 5, Pseudopyrellia 1; Anthomy.: Hylemyia inor- 
nata 1, Phorbia acra 17. 

Lepidoptera (3: 6)—Nymphal.: Phyciodes 1; Lycaen.: Heodes 
2; Noctu.: Plusia simplex 3. 

Hemiptera (1: 1)—Pentatom.: Euschistus ictericus 1. 


URTICACEAE (anemophilous) 
Ulmus americana.—One visitor observed, March 26. 
Long-tongued Bees (1)—Ap.: Apis ¢, ab. 


Ulmus fulva.—One visitor observed, March 23, April 9. 
Long-tongued Bees (1)—Ap.: Apis ¢, ab. 


VALERIANACEAE 


Valerianella radiata— Blooms May 12—June 11; 24 species and 
104 individuals taken on eight days, May 12—June 6; Mis, W. 


CHARLES ROBERTSON 215 


Long-tongued Bees (5: 13)—Bomb.: Bombus consimilis 9, 1; 
Ceratin.: Ceratina ?, 7, Zaodontomerus 4, 2; Stelid.: Miecrostelis 
3 2, 2; Megachil.: Osmia pumila 9, 1. 

Short-tongued Bees (9, 5: 60)—Halict.: Evylaeus pectoralis se, 
1, Odontalictus 1, Oxystoglossa similis 55; Prosopid.: Prosopis 
pygmaea 1, ziziae 2. 

Other Hymenoptera (4: 7)—KEumen.: Leionotus clypeatus 1, 
illinoensis 3, vagus 1, Zendalia acolhuus 2. 

Diptera (9: 23)—Syrph.: Mesogramma marginata 5, Paragus 
tibialis 2, Sphaerophoria 1; Bombyli.: Toxophora 2; Tachin.: 
Apinops 2, Cistogaster occidua 1, pallasii 8; Sarcophag.: Helicobia 
helicis 1; Anthomy.: Phorbia acra 1. 

Lepidoptera (1: 1)—Nymphal.: Charidryas 1. 


VERBENACEAE 

Lantana camara (cult).—Ten visitors observed, September 
24-5; Mas, Y. 

Birds (1)—Trochil.: Trochilus. 

Long-tongued Bees (1)—Bomb.: Bombus americanorum ¢. 

Lepidoptera (8)—Nymphal.: Anosia; Papilion.: Eurymus fa, 
Heraclides, Pieris fq, Pontia; Hesperi.: Ancyloxypha, Epargyreus: 
Noctu.: Plusia simplex. 


Lippia lanceolata—Blooms June 22—September 15; 56 species 
and 375 individuals observed, June 28-September 11; Mis, W. 

Long-tongued Bees (7:65)—Bomb.: Bombus americanorum 9%, 
5; Megachil.: Megachilini: Megachile brevis ¢ 9, 32; Coelioxyini: 
Coelioxys 8-dentata ¢ 9, 3; Epeol.: Triepeolus concolor ¢ 9, 16, 
lunatus °, 2; Eucer.: Florilegus ¢ 9, 6, Melissodes autumnalis 4, 1. 

Short-tongued Bees (12: 78)—Halict.: Agapostemon viridulus 
9, 1, Augochlora fervida 9, 4, Chloralictus nymphaearum ¢, 1, 
pilosus ¢ 2, 3, tegularis 9, sc, 12, Evylaeus pectoralis 9, se, 7, Odon- 
talictus 9, 1, Oxystoglossa confusa ?, 3, pura 9, 1, similis ¢ Q, se, 
42, Seladonia 9, 1; Panurg.: Calliopsis andreniformis ¢ 9, se, 2. 

Other Hymenoptera (7:27)—Sphec.: Priononyx atrata 1, 
Sphex nigricans 11, pictipennis 3, vulgaris 5; Bembic.: Bicyrtes 
ventralis 4; Humen.: Leionotus anormis 2, clypeatus 1. 

Diptera (21:114)—Syrph.: Eristalis latifrons 2, Helophilus 
latifrons 1, similis 2, Mesogramma marginata 13, Orthoneura nitida 
1, Paragus bicolor 2, Sphaerophoria 3, Syritta 1, Tropidia quadrata 
1; Bombyli.: Exoprosopa fasciata 7, fascipennis 11, Systoechus 7; 
Conop.: Conops brachyrrhynchus 4; Tachin.: Apinops 1, Archytas 
analis 19, Ocyptera dosiades 1, tenuis 7, Pachyophthalmus floriden- 
sis 1, Siphoplagia anomala 6, Spallanzania 19, Trichophora 5. 


216 FLOWERS AND INSECTS—XXVI 


Lepidoptera (9: 91)—Nymphal.: Phyciodes 40; Lycaen.: Chry- 
sophanus 3, Everes 3; Papilion.: Eurema 1, Eurymus 1; Hesperv.: 
Ancyloxypha 21, Hylephila 1, Limochores taumas 17, Polites 5. 


Verbena angustifolia—Blooms May 22-July 18; 7 visitors 
observed, June 21—July 11; Mas, R. 

Long-tongued Bees (4)—Ceratin.: Ceratina 2; Megachil.: Mega- 
chilini: Megachile brevis ¢ , fq; Coelioxyini: Coelioxys 8-dentata 
°; Epeol.: Argyroselenis minimus @, type. 

Short-tongued Bees (1)—Halict.: Oxystoglossa similis ¢. 

Other Hymenoptera (1)—Sphec.: Sphex pictipennis. 

Lepidoptera (1)—Hesperi.: Pholisora catullus. 


Verbena bracteosa.—Blooms June 6—September ae 4 visitors 
observed, June 30, September 18; Mis, R. 

Short-tongued Bees (2, 9)—Halict.: Chloralictus tegularis; 
Panurg.: Calliopsis andreniformis. 

Lepidoptera (2)—Lycaen.: Everes; Hespert.: Hesperia. 


Verbena hastata (5:67-8).—Blooms June 29-September 27; 
69 visitors observed, July 12-September 18; Mas, R. 

Long-tongued Bees (30)—Ap.: Apis ab; Bomb.: Bombias auri- 
comus %, Bombus americanorum J 9, fq, impatiens ¢ 9, se, Psithy- 
rus laboriosus ¢'; Ceratin.: Ceratina 9; Megachil.: Megachilini: 
Megacile brevis ¢ 9, petulans 9, Xanthosarus 6’; Coelioxyini (¢ 9, 
fq) : Coelioxys 8-dentata, sayi; Hpeol.: Epeolus bifasciatus ¢ 9, faq, 
Triepeolus concavus <4, concolor ¢ 9, fq, cressonii ¢ 9, fq, helianthi 
do, lunatus ¢ @, pectoralis 4’, remigatus J, simplex 9; Eucer.: 
Epimelissodes atripes 9, Melissodes agilis gj autumnalis ¢, bi- 
maculata 4, coloradensis <', comptoides 0’, nivea ¢ 9, similima J, 
fq, trinodis %, fq. 

Short-tongued Bees (11)—Halict.: Agapostemon radiatus ¢ 9, 
Augochlora fervida 6, Chloralictus pruinosus <j, zephyrus <, 
Curtisapis coriacea ¢', Halictus lerouxii ¢ 9, Odontalictus 9, Oxy- 
stoglossa confusa 0, ab, Seladonia ¢ 9, ab; Panurg.: Calliopsis 
andreniformis ?, sc, Verbenapis ¢ 9, se, fq. 

Other Hymenoptera (9)—Sphec.: Ammobia ichneumonea, 
Prionoyx atrata, Sphex gracilis fq, in cop, nigricans, pictipennis, 
procera; Bembic.: Bembix nubillipennis; Scoli.: Scolia bicincta; 
Vesp.: Vespula maculata. 

Diptera (11)—Bombyli.: Exoprosopa fasciata ab, fascipennis, 
Geron rufipes, Sparnopolius, Systoechus fq, Systropus fq; Conop.: 
Physocephala texana fq, tibialis, Stylogaster biannulata fq; 
Tachin.: Archytas analis; Sarcophag.: Helicobia 4-setosa. 


CHARLES ROBERTSON 217 


Lepidoptera (6)—Papilion.: Eurymus, Pontia; Hesperi.: An- 

eyloxypha, Epargyreus, Pholisora catullus; Ctenuch.: Scepsis. 
Coleoptera (1)—Lampyr.: Chauliognathus pennsylvanicus fq. 
Hemiptera (1)—Caps.: Calocoris. 


Verbena stricta (5:67).—Blooms June 5—September 20; 120 
visitors observed, June 19—-September 15; Mas, R. 

Long-tongued Bees (59)—Ap.: Apis ab; Bomb.: Bombias auri- 
comus ¢ 2 %, scutellaris 9, separatus ¢ $, Bombus americanorum 
%, consimilis %, impatiens ¢ ¥, ab, ridingsii ¢ Y, Psithyrus labori- 
osus 6, variabilis ¢ 9; Ceratin.: Ceratina 9, se, ab, Zaodontomerus 
6; Stelid.: Anthidium psoraleae 4, Dianthidium ¢, type; Mega- 
chil.: Osmiini: Alcidamea simplex 9, sc, Ashmeadiella 2; Mega- 
ehilini (¢ 2): Chelostomoides, Megachile brevis ab, generosa fq, 
mendica ab, petulans ab, 6-dentata, Oligotropus ab, Sayapis sayi 
ab, Xanthosarus fq ; Coelioxyini: Coelioxys alternata ¢, fq, germana 
o 2, modesta ¢ 9, ab, 8-dentata 9, sayi ¢ 9, fq; Xylocop.: Xylocopa 
2; Nomad.: Cephen 9, Holonomada affabilis 2; Lpeol.: Epeolus 
bifasciatus ¢', Triepeolus concavus ¢ 2, fq, concolor ¢ 9, ab, eres- 
sonii ¢' 9, ab, donatus 9, lunatus ¢ 9, ab, nevadensis ¢f 2, remigatus 
3 @, fq, simplex ¢ 9, fq; Hucer.: Anthedon ?, Epimelissodes atripes 
o 2, fq, obliqua $ 9, ab, Florilegus ¢ 9, se, fq, Melissodes agilis 
2, fq, bimaculata J 9, ab, in cop, coloradensis ¢, comptoides J 9, 
fq, coreopsis 2, petalostemonis 9, simillima 9, trinodis 4, variabilis 
3 9, fq, vernoniana ¢ 9, ab, in cop, Peponapis 4, Tetralonia dilecta 
2; Emphor.: Emphor 2. 

Short-tongued Bees (11)—Halict.: Agapostemon radiatus ¢ 9, 
fq, splendens ¢ 9, texanus ¢ 9, viridulus ¢ 2, fq, Halictus lerouxii 
3, Odontalictus 2, Oxystoglossa confusa ¢ 9, similis 2; Sphecodini: 
Sphecodes minor 2; Panurg.: Calliopsis andreniformis 2, Verben- 
apis ¢ 9, se, fq, in cop. 

Other Hymenoptera (5)—Sphec.: Sphex nigricans, procera, 
vulgaris; Bembic.: Bembix spinolae; Scoli.: Elis 5-cincta. 

Diptera (15)—Syrph.: Baccha clavata, Eristalis tenax; Neme- 
strin.: Rhynchocephalus fq; Bombyli.: Anthrax parvicornis ab, 
Bombylius atriceps, Exoprosopa fasciata ab, fascipennis, Geron 
rufipes ab, Systoechus fq; Conop.: Physocephala texana, tibialis, 
Stylogaster biannulata fq, neglecta, Zodion fulvifrons, obliquefas- 
ciatum. 

Lepidoptera (30)—Nymphal.: Anosia, Argynnis, Euptoieta, 
Phyciodes, Vanessa huntera; Lycaen.: Cyaniris, Everes, Uranotes; 
Papilion.: Callidryas, Euphoeades, Eurema, Eurymus, Iphiclides, 
Laertias, Pieris, Pontia ab; Hesperi.: Ancyloxypha, Atalopedes, 


218 FLOWERS AND INSECTS—XXVI 


Atrytone delaware ab, Epargyreus fq, Hesperia, Limochores 
taumas ab, Pholisora catullus, hayhurstii fq, Polites, Thanaos 
juvenalis, martialis, persius, Thorybes bathyllus; Sphing.: Hemaris 
axillaris. ? 

On nine days, July 10—-August 7, 1913, 58 species and 450 in- 
dividuals were taken on the flowers, as follows :— 

Long-tongued Bees (24: 285)—Ap.: Apis 12; Bomb.: Bombias 
separatus 1; Ceratin.: Ceratina 25, Zaodontomerus 1; Megachil.: 
Megachilini: Megachile brevis 38, generosa 1, mendica 8, petulans 4, 
Oligotropus 2, Sapapis sayi 11; Coelioxyini: Coelioxys alternata 3, 
modesta 15, sayi 5; Epeol.: Triepeolus concavus 1, concolor 72, 
eressonii 8, lunatus 5, remigatus 1, simplex 2; Hucer.: Epimelis- 
sodes obliqua 8, Melissodes bimaculata 32, coloradensis 1, comptoides 
2, vernoniana 27. 

Short-tongued Bees (5: 12)—Halict:. Agapostemon radiatus 3, 
viridulus 2, Oxystoglossa confusa 3, similis 3; Panurg.: Ver- 
benapis 1. 

Other Hymenoptera (4: 22)—Sphec.: Sphex nigricans 3, pro- 
cera 17, vulgaris 1; Bembic.: Bembix spinolae 1. 

Diptera (7:28)—Bombyli.: Anthrax parvicornis 1, Exo- 
prosopa fasciata 17, fascipennis 1, Geron rufipes 3, Systoechus 3; 
Conop.: Stylogaster neglecta 2, Zodion fulvifrons 1. 

Lepidoptera (18: 103)—Nymphal.: Argynnis 1, Phyciodes 2, 
Vanessa huntera 2; Lycaen.: Cyaniris 1, Everes 2; Papilion.: 
Eurema 2, Laertias 3, Pontia 7; Hespert.: Ancyloxypha 2, Atry- 
tone delaware 62, Epargyreus 5, Hesperia 1, Limochores taumas 1, 
Pholisora hayhurstii 7, Polites 1, Thanaos martialis 1, Thorybes 
bathyllus 1; Sphing.: Hemaris axillaris 2. 


Verbena urticaefolia (5:68).—Blooms June 19-October 5; 59 
visitors observed, July 11-September 2; Mis, W. 

Long-tongued Bees (13)—Ap.: Apis; Bomb.: Bombus ameri- 
canorum ¢ %, impatiens 9, Ceratin.: Ceratina 9, sc; Megachil.: 
Trypetini: Neotrypetes truncatus 2; Megachilini: Megachile brevis 
3& 9, mendica ¢ 9; Coelioxyini: Coelioxys sayi ¢ 9, fq; Nomad.: 
Cephen 2; Epeol.: Epeolus bifasciatus ¢' 2, Triepeolus concolor ¢ 
9, eressonii ¢'; Eucer.: Melissodes bimaculata 9. 

Short-tongued Bees (15)—Halict.: Agapostemon radiatus ¢ 9, 
fq, Augochlora fervida ¢' 9, viridula 9, Chloralictus pilosus ¢ 9, 
versatus 9, Evylaeus nelumbonis 9, pectoralis 2, Halictus lerouxii 
3 &, fq, Odontalictus #9, fq, Oxystoglossa confusa J 9, fq, pura J, 
similis ¢' 2, fq, Seladonia J 9, ab; Panurg. (¢ 9, se, fq) Calliopsis 
andreniformis, Verbenapis in cop. 


CHARLES ROBERTSON 219 


Other Hymenoptera (4)—Sphec.: Sphex gracilis in cop, vul- 
garis; Scoli.: Elis 5-cincta, Scolia bicincta. 

Diptera (21)—Syrph.: Baccha clavata, Mesogramma geminata, 
Sphaerophoria, Syritta fq; Zmpid.: Parempis; Bombyli.: Anthrax 
fulvohirta, Exoprosopa fascipennis, Geron rufipes, Systropus, 
Toxophora; Conop.: Oncomyia, Stylogaster neglecta, Zodion 
obliquefasciatum; Tachin.: Archytas analis, Cistogaster occidua, 
Epigrimyia geniculata fq, Phorantha humeralis, Siphona, Spallan- 
zania, Trichophora fq; Musc.: Compsomyia. 

Lepidoptera (6)—Nymphal.: Phyciodes; Lycaen.: Everes fq, 
Uranotes; Papilion.: Eurema, Pieris, Pontia. 


VIOLACEAE 
Hybanthus concolor (16: 156-7).—Blooms April 30-May 30; 
1 visitor observed, May 7; Mi, Y. 
Short-tongued Bees (1)—Halict.: Oxystoglossa confusa 9. 


Viola cucullata (2: 173).—Blooms March 17—May 21; 27 vis- 
itors observed, April 9-May 21; Ma, R. Insects not reversing on 
the flowers are marked n. 

Long-tongued Bees (14)—Ap.: Apis; Bomb. (9, n): Bombias 
auricomus, separatus, Bombus americanorum, impatiens; Ceratin.: 
Ceratina ¢, n; Megachil.: Centrosmia 9, Ceratosmia ¢ 9, Osmia 
collinsiae ¢, pumila ¢ 9, se, ab; Nomad.: Holonomada affabilis 9; 
Eucer.: Tetralonia belfragei ¢ 9, dilecta ¢; Anthophor.: Antho- 
phora 3, n. 

Short-tongued Bees (5)—Halict. (2): Chloralictus ecressonii n, 
type, Evylaeus foxii, Seladonia n; Andren.: Andrena ecarlini 9, 
Iomelissa violae ¢ 9, se, ab, type. 

Diptera (2, n)—Bombyli.: Bombylius major, pulchellus. 

Lepidoptera (6)—Nymphal.: Vanessa huntera; Papilion.: 
Eurymus, Pieris; Hesperi.: Thanaos brizo, juvenalis, martialis. 


Viola pedata (2: 174-5).—Blooms April 13—May 27; 14 visitors 
observed, April 19—May 20; Ma, R. 

Long-tongued Bees (6)—Ap.: Apis; Bomb. (2): Bombias 
separatus, Bombus americanorum ab, impatiens; Eucer.: Tetra- 
lonia dilecta ¢ 9; Anthophor.: Anthophora 9, se, ab. 

Diptera (1)—Syrph.: Eristalis latifrons fsp, n. 

Lepidoptera (7)—Nymphal.: Vanessa cardui; Papilion.: Eury- 
mus, Pieris; Hesperi.: Thanaos brizo ab, icelus, juvenalis; Noctw.: 
Plusia simplex. 


Viola pedatifida.—Blooms April 17-May 20; 1 visitor observed, 
May 15; Ma, R. 


220 FLOWERS AND INSECTS—XXVI 


Long-tongued Bees (1)—Eucer.: Tetralonia dilecta J. 


Viola pubescens (2:172-3).—Blooms April 9-May 7; 22 vis- 
itors observed, April 16-30; Mi, Y. 

Long-tongued Bees (7)—Bomb.: Bombus americanorum 9, n; 
Ceratin.: Ceratina 2; Megachil.: Osmia atriventris 9, sc, ab, pumila 
Jb 9, se, ab, in cop; Nomad.: Nomada sayi 9 ; Eucer.: Tetralonia bel- 
fragei 2; Anthophor.: Anthophora 9. 

Short-tongued Bees (7, 9)—Halict.: Chloralictus pilosus se, 
sparsus sc, versatus, Curtisapis coriacea, Oxystoglossa confusa se, 
ab, Seladonia; Andren.: Andrena earlini se. 

Diptera (5)—Syrph. (fsp, n): Melanostoma obscurum, Meso- 
gramma marginata, Paragus tibialis; Bombylt.: Bombylius major 
ab; Tachin.: Gonia capitata. 

Lepidoptera (3)—Papilion.: Eurymus; Hesperi.: Thanaos 
juvenalis, martialis. 


Viola sagittata.—Blooms April 15—-May 24; 3 visitors observed, 
April 25-29; Ma, R. 

Long-tongued Bees (1)—WMegachil.: Osmia pumila %, 1. 

Short-tongued Bees (1)—Andren.: Iomelissa ¢ 9, se, 4. 

Lepidoptera (1)—Papilion.: Eurymus 1. 


Viola striata (2:174).—Blooms April 12-June 8; 19 visitors 
observed, April 16-May 20; Ma, W. Visitors not reversing are 
marked n. 

Long-tongued Bees (13)—Ap. Apis n; Bomb. (9, n) : Bombias 
auricomus, separatus, Bombus americanorum, consimilis, im- 
patiens; Ceratin.: Zaodontomerus ¢, n; Megachil. (sc) : Diceratos- 
mia 9, Osmia atriventris 9, collinsiae ¢ 9, fq, pumila 2, fq; Hucer.: 
Tetralonia belfragei ¢' ?, fq, n, dilecta 3, n. 

Short-tongued Bees (3, 9)—Halict.: Curtisapis coriacea; An- 
dren.: Andrena carlini, Iomelissa se, fq. 

Diptera (1)—Bombyli: Bombylius major n. 

Lepidoptera (2, n)—Papilion.: Eurymus; Hesperi.: Thanaos 
persius. 


VITACEAE 
Psedera quinquefolia.—Blooms June 13-July 27; 1 visitor 
observed, June 22, July 27; Mas, Y. 
Long-tongued Bees (1)—Megachil.: Megachile-mendica ¢ Q, 
se, ab. 


Vitis cordifolia.—Blooms June 5-22; 3 visitors observed, June 
15; Mas, Y. 


CHARLES ROBERTSON 221 


Long-tongued Bees (3)—Ap. Apis ¢; Bomb.: Bombias separatus 
9, ¢; Eucer.: Tetralonia dilecta 9. 


Vitis vulpina——Blooms May 12-June 1; 3 visitors observed, 
May 16-29; Mas, Y. 

Long-tongued Bees (3, 9, c)—Bomb.: Bombias separatus, Bom- 
bus americanorum, impatiens. 


FLOWERS AND INsEcts Papers Crrep 
Insects and Asclepiads. Bot. G. 12: 207-16, 244-50. 1887. 
Fils. I-III. Bot. G. 14: 120-6, 172-8, 297-304. 1889. 
Fis. IV, V. Bot. G. 15: 79-84, 199-204. 1890. 
Fls. VI. Bot. G. 16: 65-71. 1891. 
VII-IX. Bot. G. 17: 65-71, 173-9, 269-76. 1892. 
Fls. X, XI. Bot. G. 18: 47-54, 267-74. 1893. 
Fis. XII. Bot. G. 19: 103-12. 1894. 
Fis. XIII, XIV. Bot. G. 20: 104-10, 139-49. 1895. 
Fils. XV-XVII. Bot. G. 21: 72-81, 266-74; 22: 154-65. 1896. 
10. Fils. XVIII. Bot. G. 25: 229-45. 1898. 
11. Fis. XIX. Bot. G. 28: 27-45. 1899. 


CONAN PON 
ry 
— 
7 


’ 12. Fis. Umbelliferae. St. L. A. 5:449-60. 1890. 


13. Fis. Aselep. to Seroph. St. L. A. 5:569-98. 1891. 

14. Fils. Labiatae. St. L. A. 6:101-31. 1892. 

15. Fils. Rosaceae and Compositae. St. L. A. 6:435-80. 1894. 
16. Fis. Contributions. St. L. A. 7:151-79. 1896. 


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